1-May-81 00:09:00,2488;000000000000
Date: Friday, 1 May 1981 00:09-MDT
From: Ronald G. Fowler <RGF (Ron Fowler at MIT-MC) at MIT-MC>
Sender: RGF at MIT-MC
To: SK at MIT-MC
cc: INFO-CPM at MIT-MC
Subject: Networking
Steve, I retrieved the following two messages from CBBS/DETROIT,
a local message service. I don't know this guy Winkler, but have
seen his stuff advertised on CBBS's around the country, and (so
far) have heard no bad words about him.
One advantage I can see is that he provides source for his sys-
tem, so if there are any problems (if?), you will be better equipped
to solve them.
I don't know this guy and can't vouch for his software, but thought
it may be what you need.
------------------------
Msg 01036 is 16 line(s) on 04/06/81 from MARK WINKLER
to ALL re: CP/NET - SMARTNET
SMARTNET AND DUMBNET NETWORKING SOFTWARE
BEFORE YOU BUY CP/NET CHECK THESE FEATURES.
1: NO MODIFICATIONS NEEDED TO THE BIOS OR XIOS
2: PASSWORD PROTECTION FOR LEVELS 1 TO 15 OF THE HUB.
3: LIST FILES OFF OF HUB COMPUTER WITHOUT DOWNLOADING.
4: AUTO SPOOLING AND DESPOOLING. A TRUE SPOOLER.
5: BLOCK DATA TRANSFER WITH CHECKSUM.
6: THE STAT COMMAND IS FULLY FUNCTIONAL ON SATELLITES.
7: ANY NUMBER OF FILES CAN BE OPENED ON THE HUB.
8: VERY LOW MEMORY REQUIREMENTS.
9: LINK SPEED BASED ON HARDWARE NOT SOFTWARE QUEUES.
10: FULL DOCUMENTED SOURCE IS PROVIDED !
11: SMARTNET IS USED ON SYSTEMS WITH AT LEAST ONE DRIVE.
DUMBNET NEEDS NO DISK DRIVES JUST MEMORY AND A CONSOLE.
SMARTNET AND DUMBNET PURCHASED TOGETHER $300.00 DISCOUNTS
AVAILABLE. MARK WINKLER 312-868-4866
Msg 00976 is 16 line(s) on 3/8/81 from MARK WINKLER
to ALL re: MP/M UTILITIES
MP/M UTILITIES PRICE $35.00
PSPOOL -- SPOOLS FILES AND PUTS FILE NAME,TIME,DATE
AND PAGE NUMBER ON EACH PAGE.
PRINT -- LISTS FILES ON PRINTER WITH SAME HEADINGS AS
PSPOOL BUT CAN START ON ANY PAGE.
LOGIN -- FORCES ALL USERS TO LEVEL ZERO. PASSWORDS MUST
BE USED TO ACCESS ANY OTHER LEVEL.
DR -- DISPLAYS THE SYS AND DIR FILES AND R/O AND R/W
STATUS. ALSO THE FILE SIZE AND DISK FREE BYTES
SETATT - SETS THE FILES ATTRIBUTES COLLECTIVELY OR
SELECTIVELY.
MESSAGE - ALLOWS MESSAGES TO BE SENT BETWEEN TERMINALS.
SIGNALS THE RECEIVING CONSOLE WITH THE BELL.
BPATCH - ALLOWS THE USE OF CTL-P,CTL-Q,CTL-D IN MBASIC
VER 4.51,5.1,5.2. MARK WINKLER 541
INGRAHAM AVE. CALUMET CITY,ILL. 60409 312-868-4866
1-May-81 01:22:00,2617;000000000000
Date: Friday, 1 May 1981 01:22-MDT
From: Keith B. Petersen <W8SDZ at MIT-MC>
To: INFO-CPM at MIT-MC, INFO-MICRO at MIT-MC
cc: W8SDZ at MIT-MC
Subject: [RGF: Networking]
Date: 1 May 1981 02:09-EDT
From: Ronald G. Fowler <RGF (Ron Fowler at MIT-MC)>
Sender: RGF
To: SK
cc: INFO-CPM
Re: Networking
Steve, I retrieved the following two messages from CBBS/DETROIT,
a local message service. I don't know this guy Winkler, but have
seen his stuff advertised on CBBS's around the country, and (so
far) have heard no bad words about him.
One advantage I can see is that he provides source for his sys-
tem, so if there are any problems (if?), you will be better equipped
to solve them.
I don't know this guy and can't vouch for his software, but thought
it may be what you need.
------------------------
Msg 01036 is 16 line(s) on 04/06/81 from MARK WINKLER
to ALL re: CP/NET - SMARTNET
SMARTNET AND DUMBNET NETWORKING SOFTWARE
BEFORE YOU BUY CP/NET CHECK THESE FEATURES.
1: NO MODIFICATIONS NEEDED TO THE BIOS OR XIOS
2: PASSWORD PROTECTION FOR LEVELS 1 TO 15 OF THE HUB.
3: LIST FILES OFF OF HUB COMPUTER WITHOUT DOWNLOADING.
4: AUTO SPOOLING AND DESPOOLING. A TRUE SPOOLER.
5: BLOCK DATA TRANSFER WITH CHECKSUM.
6: THE STAT COMMAND IS FULLY FUNCTIONAL ON SATELLITES.
7: ANY NUMBER OF FILES CAN BE OPENED ON THE HUB.
8: VERY LOW MEMORY REQUIREMENTS.
9: LINK SPEED BASED ON HARDWARE NOT SOFTWARE QUEUES.
10: FULL DOCUMENTED SOURCE IS PROVIDED !
11: SMARTNET IS USED ON SYSTEMS WITH AT LEAST ONE DRIVE.
DUMBNET NEEDS NO DISK DRIVES JUST MEMORY AND A CONSOLE.
SMARTNET AND DUMBNET PURCHASED TOGETHER $300.00 DISCOUNTS
AVAILABLE. MARK WINKLER 312-868-4866
Msg 00976 is 16 line(s) on 3/8/81 from MARK WINKLER
to ALL re: MP/M UTILITIES
MP/M UTILITIES PRICE $35.00
PSPOOL -- SPOOLS FILES AND PUTS FILE NAME,TIME,DATE
AND PAGE NUMBER ON EACH PAGE.
PRINT -- LISTS FILES ON PRINTER WITH SAME HEADINGS AS
PSPOOL BUT CAN START ON ANY PAGE.
LOGIN -- FORCES ALL USERS TO LEVEL ZERO. PASSWORDS MUST
BE USED TO ACCESS ANY OTHER LEVEL.
DR -- DISPLAYS THE SYS AND DIR FILES AND R/O AND R/W
STATUS. ALSO THE FILE SIZE AND DISK FREE BYTES
SETATT - SETS THE FILES ATTRIBUTES COLLECTIVELY OR
SELECTIVELY.
MESSAGE - ALLOWS MESSAGES TO BE SENT BETWEEN TERMINALS.
SIGNALS THE RECEIVING CONSOLE WITH THE BELL.
BPATCH - ALLOWS THE USE OF CTL-P,CTL-Q,CTL-D IN MBASIC
VER 4.51,5.1,5.2. MARK WINKLER 541
INGRAHAM AVE. CALUMET CITY,ILL. 60409 312-868-4866
2-May-81 01:43:00,243;000000000000
Date: Saturday, 2 May 1981 01:43-MDT
From: MEADER at MIT-AI
To: INFO-CPM at MIT-AI
WANTED: CBIOS listing for SD Versafloppy I for CP/M 2.2
The manufacturer cannot supply one and has no
suggestions. I don't want to reinvent the ...
2-May-81 20:49:00,170;000000000000
Date: Saturday, 2 May 1981 20:49-MDT
From: Howard Postley <ONTEL at MIT-MC>
To: INFO-CPM at MIT-MC
Subject: DU-V75 hidden
Alright, who put it where?!
hp
3-May-81 00:41:00,638;000000000000
Date: Sunday, 3 May 1981 00:41-MDT
From: Barry A. Dobyns <BADOB at MIT-AI>
To: info-cpm at MIT-MC
cc: BADOB at MIT-AI
Subject: info-micro@ai
There is now a users group for Amethyst users. Plans include
a monthly newsletter, and distribution of submitted user extentions.
Amethyst (for those who don't recall) is a EMACS-ish extensible
text editor and a SCRIBE-ish extensible formatter all in C.
Amethyst Users Group
P.O. Box 8173
Austin, Texas 78712
(512) 441-9466
Also it exists as a mailing list, AMETHYST-USERS@AI. if you are
interested in either mail to me, or snail to the above address.
-barry
3-May-81 23:58:00,537;000000000000
Date: Sunday, 3 May 1981 23:58-MDT
From: Keith B. Petersen <W8SDZ at MIT-MC>
To: INFO-CPM at MIT-MC
Subject: DU-V75.ASM
MC:CPM;DU-V75 ASM has been restored. Also available there is
DU-V75 DOC and DU-V75 HEX. This is the automatically-adjusting
disk utility for CP/M 1.4 and 2.x. There are no special assembly-
time options other than the byte at 103H documented in the DOC
file, so unless you have an interest in how the code was written,
you don't need to take the time to get the ASM file. The HEX
will do as well.
3-May-81 23:59:00,207;000000000000
Date: Sunday, 3 May 1981 23:59-MDT
From: Roger L. Long <BYTE at MIT-MC>
To: INFO-CPM at MIT-MC
Please add me to your mailing list... I seem to have been dropped
awhile back.
Thanks.
Roger
8-May-81 01:33:00,1033;000000000000
Date: Friday, 8 May 1981 01:33-MDT
From: Keith B. Petersen <W8SDZ at MIT-MC>
To: INFO-CPM at MIT-MC
Subject: New versions of MODEM and XMODEM
MODEM527.ASM has been updated, and the new file now has the
revision number in the name - instead of the revision date.
The file is MC:CPM;MODEM 206ASM
XMODEM41.ASM has been updated, and the new file is
MC:CPM;XMODEM 42ASM
There have been significant improvements made for users of
the PMMI modem (and hopefully someone with the DC Hayes modem
will add it to the new routines) by checking the overrun and
framing error flags. See MC:CPM MODEM 206DOC and MC:CPM XMODEM 42DOC.
A bug in MODEM527 which allowed ambiguous or no filename at all
has also been fixed.
These programs support PMMI, DC Hayes, and external serial port
modems. As mentioned before, the MODEM527 (from which they were
derived) was the "cleanest" and easiest to get up and running.
The new programs have the enthusiastic support of Ward Christensen,
who wrote the original MODEM2.ASM.
11-May-81 18:13:00,802;000000000000
Date: Monday, 11 May 1981 18:13-MDT
From: Michael C. Adler <MADLER at MIT-MC>
To: INFO-CPM at MIT-MC
I am considering the purchase of a Heathkit H89 computer and have not
been able to decide whether or not to spend more $ ($200) for CPM instead
of the Heath operating system, HDOS. HDOS comes with a lousy Basic but
CPM doesn't, which accounts for most of the cost. Does anyone have
any ideas about the differences between HDOS and CPM and what you
consider to be the advantages of CPM? I have also noticed the software
in the CPM account. I think that HDOS has the same 8080 assembler.
Would most of the software be compatable with both HDOS and CPM or does
it have specific CPM functions?
Thanks,
-Michael Adler
P.S. Could I be put on the mailing INFO-CPM mailing list?
12-May-81 05:21:00,696;000000000000
Date: Tuesday, 12 May 1981 05:21-MDT
From: Devon S. McCullough <DEVON at MIT-MC>
To: INFO-CPM at MIT-MC
cc: MADLER at MIT-MC
Subject: HDOS loses
I don't know much about HDOS, but even if it's the best thing around, you're
better off with CP/m, since everyone else has it. I might add that I think
CP/M is one of the worst crocks ever, but it's popularity makes it a must.
You can still run your HDOS programs with an HDOS emulator running under CP/m.
Since all the HDOS system calls start with a RST instruction that CP/m doesn't
use, this should be fairly easy to write, although I have not tried it.
Transferring HDOS programs and files to CP/M format might be a problem.
12-May-81 06:42:00,852;000000000000
Date: Tuesday, 12 May 1981 06:42-MDT
From: Frank J. Wancho <FJW at MIT-MC>
To: INFO-CPM at MIT-MC
cc: FJW at MIT-MC
Subject: Dumb Question
We just received the Winterhalter Remote Batch Terminal Emulator and
the writeup says to rewire the dip headers for a Real-Time Clock of
3.328 ms, Interrupts for Clock as RST5, and for Modem as RST4, and
modem data rate controlled by modem. The specific details of what to
do are given for our system.
My question is: if we were to do this, would regular CP/M use of other
programs not be bothered by those interrupts (or do I have to do
something to field them)? Would a regular printer connected to the
port used for the modem no longer work properly?
I have a mixed educated guess as to what will happen without actually
trying it. Has anybody tried and know for sure?
--Frank
14-May-81 01:49:00,507;000000000000
Date: Thursday, 14 May 1981 01:49-MDT
From: Robert E. Spivack <PHOTOG at MIT-MC>
To: FJW at MIT-MC, INFO-CPM at MIT-MC
I TOYED WITH ADDING SOME INTERRUPT DRIVEN ROUTINES TO MY CP/M
AND MY METHOD WAS TO 'PAMPER' ALL DISC BIOS CALLS WITH DI/EI
INSTRUCTIONS TO PREVENT PROBLEMS (MY DISC CONTROLLER IS MEMGORY
MAPPED WITH WAIT/LINE DERIVED SYNCHRONIZATION) ONLY BAD EFFECT
IS THAT YOU MISS AN INTERRUPT HERE, AND AN INTERRUPT THERE...
SO I ALWAYS JUMPED TO A POOLL LOOP BEFORE RETURNING TO CALLER
15-May-81 16:16:00,541;000000000000
Date: 15 May 1981 (Friday) 1816-EDT
From: WESTFW at WHARTON-10 (William Westfield)
To: dan at MIT-ML
cc: info-cpm at MIT-MC
Subject: MODEM for TOPS-10
There is now a simple minded version of the MODEM program that will
download programs from a site runnning TOPS-10. It will only handle
text type files, and transferrs are only one way, but it should help
some of you.
Source code on WHARTON-10 in MODEM.MAC[4000,42] FTPable without
logining in.
Comments and suggestions should be sent to BillW@SRI-KL
Enjoy
BILLW
17-May-81 04:30:00,420;000000000000
Date: Sunday, 17 May 1981 04:30-MDT
From: DAN at MIT-ML
To: info-cpm at MIT-MC
Subject: TeleVideo Terminal control codes needed
I need the control codes and cursor functions, etc., for a
TeleVideo Terminal (for an emulator). I am not exactly sure
which model, so if you know anything about TeleVideo's, I'd
want the control codes for the "bottom of the line" model.
Send replies to DAN@ML.
Thanks, Dan
17-May-81 09:32:00,2888;000000000000
Date: Sunday, 17 May 1981 09:32-MDT
From: BHUBER at USC-ECL
To: DAN at MIT-ML
cc: BHUBER at USC-ECL, INFO-CPM at MIT-MC
Subject: TeleVideo Terminal control codes needed
In response to your message sent 05/17/81 04:30:38
There are now, to my understanding five versions of terminals marketed by
TeleVideo, Inc. The 912B and 912C differ only in keyboard arrangement (the
912B has an 84 key keyboard comprised of alphanumeric characters, symbols,
and control keys to perform its full operations; the 912C has an 82 key
keyboard, in a standard typewriter style, with alphanumeric characters,
symbols, and control keys). The 920B and 920C are similar to the 912x
series except that 11 special function keys have been added. All four
models can produce the standard full 128 ASCII character set and can be
optionally (read more $, about $25) be configured with a second display
page. Upper/lower case display with descenders is standard. There is a
new 950 model about which I know zilch.
For the control codes, note that a Televideo is almost identical to a Soroc
IQ 120 terminal. For a lot of CP/M programs which tailor to terminal codes,
settings for Soroc IQ 120s works quite well.
Quote page 31 of the TeleVideo Operator's Reference Handbook (the same manual
regardless of TVI 912B-C/920B-C tube):
Beep ^G
Cursor left ^H
Cursor down ^J
Cursor up ^K
Cursor right ^L
Home ^~ or ^^
Tab (skip) ^I
New line ^_ (underscore)
Protect mode on ESC &
Protect mode off ESC '
Start (half intensity) ESC )
End (half intensity) ESC (
Set column tab ESC 1
Clear tab ESC 2
Clear all tabs ESC 3
Send line unprotect ESC 4
Send page unprotect ESC 5
Send line all ESC 6
Send page all ESC 7
Clear all to space ESC + or ESC Z
Clear all to null ESC *
Clear FG to null ESC :
Clear FG to space ^Z or ESC ;
Keyboard enable ESC "
Keyboard disable ESC #
Load cursor ESC =
Read cursor ESC ?
{note cursor commands offset 32 decimal and are YX format}
Set block mode ESC B
Set conversation mode ESC C
Print page ESC P
Char insert ESC Q
Char delete ESC W
Line insert ESC E
Line delete ESC R
Line erase to space ESC T
Page erase to space ESC Y
Back tab ESC I
Toggle page ESC K
Start blink field ESC ^
Start blank field ESC _ (underscore)
End blink/blank ESC q
Tab ESC i
Start inverse ESC j
End inverse ESC k
Start underline ESC l
End underline ESC m
Line erase to null ESC t
Page erase to null ESC y
Auto flip on ESC v
Auto flip off ESC w
Extension port on ESC @
Page print mode on ESC A
End quote.
TeleVideo, Inc.
3190 Coronado Drive
Santa Clara, California 95051
408-246-5428
TWX: 910-3387633
Hope this helps.
Bud
17-May-81 15:20:00,594;000000000000
Date: Sunday, 17 May 1981 15:20-MDT
From: DAG at MIT-AI
To: info-cpm at MIT-ML
cc: DAG at MIT-AI
Does anyone know a a public domain routine in 8080 code to load in
and execute .COM files. (this is without leaving a note for
the CCP). In addition, I need the address in the BDOS (offset may be
a better term) for the print flag - tells whether a ^P was typed, and for
the submit file in progress flag. I am writing a modification of the
CCP and need this information desparately. The load and go program
is not as important, I am just lazy.
Thanks,
Dave Gewirtz
18-May-81 18:47:00,825;000000000000
Date: Monday, 18 May 1981 18:47-MDT
From: David A. Gewirtz <DAG at MIT-AI>
To: jswain at BBNA
cc: DAG at MIT-AI, info-cpm at MIT-MC
Thanks for the information that you sent me, but I think that you
missunderstood my original question. I do not wish to know how
to auto run a program on power up, I am looking for a routine
that does a load and go of com files, without help
from the CCP. This is because the system I am working on,
spelt developing, does not have a CCP, and needs this to substitute
for the CCP. In effect, it is one of a 5 part system that replaces
the CCP (one of the 5 parts). The rest of the system provides a high
level job control language (extensible) for cpm and a
user modifiable shell, as well as all sorts of other fun
little goodies.
Thanks
Dave Gewirtz
19-May-81 20:13:00,677;000000000000
Date: Tuesday, 19 May 1981 20:13-MDT
From: SAC.AUTODIN at USC-ISIE
To: INFO-CPM at MC
cc:
[Conn]: at USC-ISIE
Subject: CP/M 3.0
Hello, everyone,
I just received a wild rumor today, and was wondering if
anyone can substantiate it. The rumor: Digital Research is now
releasing the preliminary version of CP/M 3.0 for examination and
comments from selected parties (in particular, those who paid the $60K
license fee for source modification, etc, rights). From my source, it
appears that 3.0 has a radically different directory structure, and
protection mechanisms such as file passwords are implemented.
Rick Conn
21-May-81 19:06:00,724;000000000000
Date: Thursday, 21 May 1981 19:06-MDT
From: Keith B. Petersen <W8SDZ at MIT-MC>
To: INFO-CPM at MIT-MC
Subject: Update of Universal FINDBAD program
The latest version of FINDBAD, the bad sector lockout program, is in
MC:CPM;FBAD54 ASM (source code), or MC:CPM;FBAD54 COM (executable COM
file). See the first part of the .ASM file for instructions on two
bytes which may be altered with DDT to control whether the system
tracks are tested and where the dummy allocation file [UNUSED].BAD is
placed (you can specify what user area under CP/M 2.x).
If you cannot download from MC, you can get these files from my remote
CP/M system, which is shown in the file which lists remote CP/M system
phone numbers.
24-May-81 03:17:00,973;000000000000
Date: Sunday, 24 May 1981 03:17-MDT
From: Keith B. Petersen <W8SDZ at MIT-MC>
To: INFO-CPM at MIT-MC
cc: W8SDZ at MIT-MC
Subject: [W8SDZ: Phone number/download]
Date: 24 May 1981 04:46-EDT
From: Keith B. Petersen <W8SDZ>
To: Cory.cc-06 at BERKELEY
cc: W8SDZ
Re: Phone number/download
Peter, you asked for a number - but I'm not sure which one you wanted.
The message came with no subject header. I guess maybe this was about
my announcement of the new FINDBAD program. If you can FTP from MC,
you can get the file that way. It's in MC:CPM;FBAD54 ASM and is a
normal ASCII file which should FTP. The phone number from my remote
CP/M system is (313)-588-7054. It is a "callback" system. You have
to ring once, hang up and call again within 40 seconds. It will
answer the the second call automatically. Just press RETURNs until it
senses your baud rate. It will accept 110, 300, 450 and 600 baud
using the standard 103 modem tones.
26-May-81 02:27:00,187;000000000000
Date: Tuesday, 26 May 1981 02:27-MDT
From: Barry A. Dobyns <BADOB at MIT-AI>
To: INFO-CPM at MIT-AI
DOES ANYONE KNOW OF A VERSION OF FAST OR SPEED FOR
CP/M 2.2?
-TNX, BARRY
26-May-81 02:42:00,230;000000000000
Date: Tuesday, 26 May 1981 02:42-MDT
From: Keith B. Petersen <W8SDZ at MIT-MC>
To: INFO-CPM at MIT-MC
Subject: New list of remote CP/M systems
MC:CPM;RCP/M NOS has been updated as of today. RCPMLIST.15
is now current.
26-May-81 02:45:00,249;000000000000
Date: Tuesday, 26 May 1981 02:45-MDT
From: Keith B. Petersen <W8SDZ at MIT-MC>
To: INFO-CPM at MIT-MC
Subject: FINDBAD version 5.4
MC:CPM;FBAD54 ASM has been restored. It was apparently lost
somehow. Sorry if anyone was inconvenienced.
26-May-81 03:05:00,386;000000000000
Date: Tuesday, 26 May 1981 03:05-MDT
From: Keith B. Petersen <W8SDZ at MIT-MC>
To: INFO-CPM at MIT-MC
cc: W8SDZ at MIT-MC
Subject: [W8SDZ: forwarded]
Date: 26 May 1981 04:55-EDT
From: Keith B. Petersen <W8SDZ>
To: BADOB at MIT-AI
cc: W8SDZ
I have FAST2.COM, FAST2.ASM, PACKUP2.ASM. All are available on my
remote CP/M system. This is FAST, fixed for CP/M 2.2.
26-May-81 03:49:00,257;000000000000
Date: Tuesday, 26 May 1981 03:49-MDT
From: Keith B. Petersen <W8SDZ at MIT-MC>
To: INFO-CPM at MIT-MC
Subject: New phone number list
MC:CPM;BBSNOS BYNAME has been updated as of today. Thanks to
Bill Blue for the very fine list of phone numbers.
27-May-81 01:47:00,374;000000000000
Date: Wednesday, 27 May 1981 01:47-MDT
From: Keith B. Petersen <W8SDZ at MIT-MC>
To: INFO-CPM at MIT-MC
Subject: CDOS filter for CP/M
MC:CPM;FILTER Z80 is source code for a filter utility which
allows running Cromemco CDOS programs on CP/M. This file is
a program which originally appeared in a magazine, but has
since been updated and improved several times.
27-May-81 03:12:00,231;000000000000
Date: Wednesday, 27 May 1981 03:12-MDT
From: Lauren at UCLA-SECURITY (Lauren Weinstein)
To: info-cpm at mc
Subject: assembler
Anyone have a Zilog Z80 mneumonic assembler that is public domain?
Thanks much.
--Lauren--
28-May-81 11:15:00,1015;000000000000
Date: 28 May 1981 at 1315-EDT
From: w8sdz at BRL
Subject: Forwarded: BDOS-PAT problems
To: INFO-CPM at MC
Date: May 28, 1981
From: Dave Hardy, Sysop, TCBBS Dearborn, Mich.
To: All CP/M 2.x users
Re: Directory problems with BDOS-PAT
Just a note about using STAT.COM with BDOS-PAT.ASM
installed. It seems that if you do a file attribute
set operation with STAT when in a non-zero user area,
STAT will also get any occurance of the name in user 0
too. To make matters worse, after STAT grabs the file
from user 0, it writes it back with the current user
number. For example, if you are in user 5 and type:
STAT *.* $R/O
STAT will also make all the files in user 0 into R/O
and will "move" them into user 5. This can be very
dangerous if you have 2 files with the same name in
different user areas. About the only way to recover
from an error like that is to use DU and be VERY
CAREFUL. This problem also occurs with several other
programs, and also the built-in CP/M commands.
28-May-81 12:27:00,478;000000000000
Date: 28 May 1981 (Thursday) 1027-PST
From: DWS at LLL-MFE
To: Info-CPM at MIT-AI
Subject: Request for assistance (HELP!)
I have need of talking with person(s) who have:
1. Installed Shugart 801Rs "from the box" (questions about jumpering).
2. Run CP/M with the California Computer Systems CPU and Disk Controller
Card. (More questions about on board jumpering and CP/M tuning).
Any help will earn you my undying thanks, and a Christmas card.
-- Dave Smith
28-May-81 17:03:00,1393;000000000000
Date: 28 May 1981 at 1603-PDT
From: fylstra.tsca at Sri-Unix
To: Info-CPM at MIT-AI
cc: fylstra.tsca at Sri-Unix
Subject: Search/Search Next
Can anyone enlighten me about a detail concerning the BDOS functions
search/search next? The CPM 2.x documentation is reasonably explicit
and it is fairly obvious how to develop a list of file names that
match a given ambiguous file name. What is unclear is whether one
can issue other BDOS function calls between consecutive search next's.
For example, a "TYPE *.ASM" command might look like this...
while ((dircode = srchnxt(fcb)) != 0xFF)
typefile( tbuff + (dircode << 5));
typefile (fcb)
{ ... various BDOS read sequential calls ... }
The reason I pose this question is that the 1.4 documentation rather
cryptically says that the Search for next occurrence function is
the same as Search for file, "but called after function 17 (no other
intermediate BDOS calls allowed)", whereas the 2.x documentation
takes no stand on this question. If it is true that one cannot
do anything useful between consecutive search next's (other than
print out a directory), how does one implement something like the
above TYPE command? The only examples I have seen actually scan the
entire directory first and store a list of filenames in a table
before performing the function on each name in turn.
Dave Fylstra
29-May-81 01:49:00,309;000000000000
Date: Friday, 29 May 1981 01:49-MDT
From: Keith B. Petersen <W8SDZ at MIT-MC>
To: INFO-CPM at MIT-MC
Subject: CCP patches for remote CP/M
Those interested in operating their own remote CP/M will find
MC:CPM;USRDFT CCP of interest. It does various patches to the
CCP to enhance remote system use.
30-May-81 01:18:00,526;000000000000
Date: Saturday, 30 May 1981 01:18-MDT
From: Kenneth E. McDowell <BIGMAC at MIT-AI>
To: DWS at LLL-MFE
cc: BIGMAC at MIT-AI, INFO-CPM at MIT-AI
Subject: Request for assistance (HELP!)
I have experience with both the Drives you speak of and the CCS boards.
I have had their 2810 Cpu board and their 2422 Disk Controller in my system
for about 2 months now and I'm quite satisfied with them both... If I can be
of any assistance, feel free to call me at (415)-563-2357 or (415)-673-4691.
Ken McDowell
30-May-81 01:20:00,533;000000000000
Date: 30 May 1981 at 0320-EDT
From: w8sdz at BRL
Subject: Forwarded: Patches for CP/M 2.2 backspace
To: INFO-CPM at MC Date: 3/22/81 From: LEWIS MOSELEY
Subject: CP/M 2.2 patch for backspace
New patch to CP/M V2.2 BDOS. Causes both <DEL> and
<BS> to be treated like a <BS>, i.e, to echo a
<BS> instead of the character. Patch this into your
BIOS source code:
ORG CCP+0A1BH
JMP CCP+0A07H
DB 0,0,0,0,0,0,0,0
NOPs to keep it pretty.
Thats all there is to it!
30-May-81 18:32:00,349;000000000000
Date: 30 May 1981 (Saturday) 2032-EDT
From: PLATTS at WHARTON-10 (Steve Platt)
To: info-cpm at MIT-AI
Subject: DMA address question
...while we're on the topic of DMA addresses, has anyone a good way
of getting the OLD dma address? I've written some coroutines which of
necessity must be cotransparent, and both do disk IO.
-Steve
30-May-81 18:33:00,1042;000000000000
Date: 30 May 1981 (Saturday) 2033-EDT
From: PLATTS at WHARTON-10 (Steve Platt)
To: info-cpm at MIT-AI
Subject: Search first/next question
Concerning the problems using search first/next to muck
around with files... I spent some time around 4 or 5 years ago reading
a disassembled version of the CPM 1.4 BDOS, and as I remember it:
Search First was used to initialize a counter into the directory
area, and to find the first occurance of a ambiguous filename.
Search next just kept up the search without reinitialization.
As CP/M would use the current DMA area for directory storage, and
not touch that counter elsewise, as long as you don't mess up
the DMA area (by perhaps switching DMA areas for other IO, then switching
back), you'd be OK using other BDOS calls. But if you mess up the
current DMA area, since the next search continues within the current block
(in all likelyhood, since directory entries are stored 4 per sector),
it'll get all confused when looking at "smashed" filenames (FCB's)
30-May-81 18:52:00,1590;000000000000
Date: Saturday, 30 May 1981 18:52-MDT
From: Ronald G. Fowler <RGF at MIT-MC>
To: PLATTS at WHARTON-10
cc: RGF at MIT-MC, INFO-CPM at MIT-MC
Subject: DMA ADDRESSES
If your program is resident while other programs are running
(such as is the case with DESPOOL, which prints a file in "back-
ground" while other programs are running), you can intercept the
BDOS calls by transplanting the address field of the jump inst-
ruction at address 5 with a jump to your intercept routine; the
intercept routine examines the parameter number in the C register,
and, if it is a SETDMA function request, stores the DMA address
in the DE register. The code sequence could look like this:
MOV A,C ;CHECK THE PARAMETER
CPI SDMAF ;SETTING DMA?
JNZ NOPE
XCHG ;YEP, SAVE A COPY FOR US
SHLD OURDMA
XCHG
NOPE: JMP $-$
Note that the $-$ address (which is the real address of the BDOS)
must be filled in by the same routine that overlays the jump at 5.
Also note that this changes the "top of memory" for programs
that read this address field, such as PIP, to determine the amount
of usable memory. If your program resides above CPM, this would
cause the BDOS and BIOS to be clobbered. In this case, you
must overlay the address field of the jump instruction pointed
to by the instruction field of the jump at 5 (which is within
the BDOS), and not the jump at 5 itself. This allows the BDOS
calls to be intercepted without changing "top of memory".
Hope this answers your question.
Ron Fowler
30-May-81 20:53:00,128;000000000000
Date: Saturday, 30 May 1981 20:53-MDT
From: secret at MIT-AI
Sender: EHUANG at MIT-AI
To: INFO-CPM at MIT-AI
Test msg
31-May-81 07:13:00,1032;000000000000
Date: Sunday, 31 May 1981 07:13-MDT
From: Aaron.Wohl at CMU-10A
To: info-cpm at MIT-MC
Subject: MODEM for TOPS-20.
Yet one more MODEM program...
- - - - Begin forwarded message - - - -
Date: 19 May 1981 0732-EDT (Tuesday)
From: Aaron.Wohl at CMU-10A
To: info-micro at MIT-MC
Subject: MODEM transfer to TOPS-20
Message-Id: <19May81 073209 AW0G@CMU-10A>
I have a pair of programs to get/send files to tops-20 from a CP/M system.
The TOPS-20 end:
** All on CMU-20C, directory <WOHL.BAR>, use ANONYMOUS to login **
FTPG.MAC,FTPG.EXE Recieve a file from a CP/M system.
FTPS.MAC,FTPS.EXE Send a file.
RESCN.MAC,RESCN.REL A subroutine needed to link FTPG,FTPS.
The 8080 end:
MODEM.MAC 8080 code for a PMMI modem (I didn't write it).
Data is sent in 128 byte blocks with block numbers and checksums.
Aaron
P.S I got this disk controler from JADE, a JADE Double D. Anybody have some
controler software for it? They only sell there software disk with CP/M...
- - - - End forwarded message - - - -
31-May-81 15:09:00,1324;000000000000
Date: 31 May 1981 (Sunday) 1709-EDT
From: PLATTS at WHARTON-10 (Steve Platt)
To: w8sdz at MIT-MC, rfg at MIT-MC
cc: info-cpm at MIT-AI
Subject: DMA address finding
... yes, I know the "default" DMA area is at 80h. However, my situation
is roughly like this: I have implemented the full IOBYTE (mostly with
the aid of a TDL SMB card), I have room for 2K worth of misc. routines
well above CPM. My user printer device is (to be) a disk-spooler; it
has its own buffer -- it must keep this buffer separate from the transient's
IO buffers (remember, we are never sure what the transient will be
or what/how many DMA areas it may be switching among). So when it comes
time for the spooler to write a buffer-full, it must save the old
DMA address, set DMA addr to the new buffer (its own), write, and then
reset the old DMA address. If I could guarantee that all transients
obey the sequence "set dma(addr); write" whenever they went to write, there'd
be no problem. But I cannot.
It looks as if I'll stick with that which Ron Fowler suggested,
0005 jmp bdos
<bdos> jmp wherever -> <bdos> jmp mypat (above f800 somewhere)
<mypat> if code=setdma then mysavearea=newaddress
jmp wherever
.. aggh, patches and patches on patches...
Thanks to all who responded,
-Steve
