;
; PAGE is THE file screen print utility for ZCPR2. Installable by
; GENINS, PAGE provides a wide range of options for the user. First, PAGE
; allows the user to employ wild cards and file name lists (lists of files
; separated by commas, like: file1,file2,file3,...). Second, PAGE provides
; the following options:
; 0-9 Set Character Print Speed Delay
; I Inspect Files
; The user approves each file to be printed
; before the printing process begins
; L Toggle Line Numbering
; Each line may or may not begin with a line
; number
; P Toggle Screen Paging
; Snnnn Skip to Specified Page
; Printing begins on the indicated page
;
; During paged output, various parameters can be changed dynamically.
; In particular, the letter P toggles screen paging and the digits 0-9
; vary the speed WHILE the output is being presented. The effect is immediate.
; Control characters may be used to perform additional control functions:
; ^S pauses the output, ^X aborts paging of current file and advances to
; the next file, and ^C aborts to the operating system.
;
;
; This program is Copyright (c) 1983 by Richard Conn
; All Rights Reserved
;
; ZCPR2 and its utilities, including this one, are released
; to the public domain. Anyone who wishes to USE them may do so with
; no strings attached. The author assumes no responsibility or
; liability for the use of ZCPR2 and its utilities.
;
; The author, Richard Conn, has sole rights to this program.
; ZCPR2 and its utilities may not be sold without the express,
; written permission of the author.
;
FALSE EQU 0
TRUE EQU NOT FALSE
;
; BASIC SYSLIB ROUTINES NEEDED BY TEMPLATE
;
ESIZE EQU 16 ; SIZE OF DIR ENTRY (FROM SYSLIB DIRF ROUTINE)
;
; OTHER EQUATES
;
EOLD EQU 0FFH ; END OF LOAD DELIMITER
;
; Branch to Start of Program
;
JMP START
;
;******************************************************************
;
; SINSFORM -- ZCPR2 Utility Standard General Purpose Initialization Format
;
; This data block precisely defines the data format for
; initial features of a ZCPR2 system which are required for proper
; initialization of the ZCPR2-Specific Routines in SYSLIB.
;
;
; EXTERNAL PATH DATA
;
EPAVAIL:
DB 0FFH ; IS EXTERNAL PATH AVAILABLE? (0=NO, 0FFH=YES)
EPADR:
DW 40H ; ADDRESS OF EXTERNAL PATH IF AVAILABLE
;
; INTERNAL PATH DATA
;
INTPATH:
DB 0,0 ; DISK, USER FOR FIRST PATH ELEMENT
; DISK = 1 FOR A, '$' FOR CURRENT
; USER = NUMBER, '$' FOR CURRENT
DB 0,0
DB 0,0
DB 0,0
DB 0,0
DB 0,0
DB 0,0
DB 0,0 ; DISK, USER FOR 8TH PATH ELEMENT
DB 0 ; END OF PATH
;
; MULTIPLE COMMAND LINE BUFFER DATA
;
MCAVAIL:
DB 0FFH ; IS MULTIPLE COMMAND LINE BUFFER AVAILABLE?
MCADR:
DW 0FF00H ; ADDRESS OF MULTIPLE COMMAND LINE BUFFER IF AVAILABLE
;
; DISK/USER LIMITS
;
MDISK:
DB 4 ; MAXIMUM NUMBER OF DISKS
MUSER:
DB 31 ; MAXIMUM USER NUMBER
;
; FLAGS TO PERMIT LOG IN FOR DIFFERENT USER AREA OR DISK
;
DOK:
DB 0FFH ; ALLOW DISK CHANGE? (0=NO, 0FFH=YES)
UOK:
DB 0FFH ; ALLOW USER CHANGE? (0=NO, 0FFH=YES)
;
; PRIVILEGED USER DATA
;
PUSER:
DB 10 ; BEGINNING OF PRIVILEGED USER AREAS
PPASS:
DB 'chdir',0 ; PASSWORD FOR MOVING INTO PRIV USER AREAS
DS 41-($-PPASS) ; 40 CHARS MAX IN BUFFER + 1 for ending NULL
;
; CURRENT USER/DISK INDICATOR
;
CINDIC:
DB '$' ; USUAL VALUE (FOR PATH EXPRESSIONS)
;
; DMA ADDRESS FOR DISK TRANSFERS
;
DMADR:
DW 80H ; TBUFF AREA
;
; NAMED DIRECTORY INFORMATION
;
NDRADR:
DW 00000H ; ADDRESS OF MEMORY-RESIDENT NAMED DIRECTORY
NDNAMES:
DB 64 ; MAX NUMBER OF DIRECTORY NAMES
DNFILE:
DB 'NAMES ' ; NAME OF DISK NAME FILE
DB 'DIR' ; TYPE OF DISK NAME FILE
;
; REQUIREMENTS FLAGS
;
EPREQD:
DB 0FFH ; EXTERNAL PATH?
MCREQD:
DB 000H ; MULTIPLE COMMAND LINE?
MXREQD:
DB 0FFH ; MAX USER/DISK?
UDREQD:
DB 000H ; ALLOW USER/DISK CHANGE?
PUREQD:
DB 000H ; PRIVILEGED USER?
CDREQD:
DB 0FFH ; CURRENT INDIC AND DMA?
NDREQD:
DB 0FFH ; NAMED DIRECTORIES?
Z2CLASS:
DB 11 ; CLASS 11
DB 'ZCPR2'
DS 10 ; RESERVED
;
; END OF SINSFORM -- STANDARD DEFAULT PARAMETER DATA
;
;******************************************************************
;
;
; **** Special Initial Value Area for GENINS
;
LWIDTH:
DB 132 ; WIDTH OF LINE
LTPP:
DB 44 ; LINES OF TEXT PER PAGE
LSPP:
DB 5 ; LINES TO SKIP PER PAGE
CWIDTH:
DB 80 ; WIDTH OF SCREEN
CTPP:
DB 22 ; LINES OF TEXT PER SCREEN
CSPP:
DB 1 ; LINES TO SKIP PER SCREEN
;
; NOTE: LTPP + LSPP + 2 (HEADER SIZE) = TOTAL LINES PER PAGE ON PRINTER
; NOTE: CTPP + CSPP + 1 (FOOTER SIZE) = TOTAL LINES PER SCREEN ON CONSOLE
;
DLNUMFL:
DB 0 ; LINE NUMBER FLAG (DEFAULT TO NO)
DPAGEFL:
DB 0FFH ; PAGE NUMBER FLAG (DEFAULT TO YES)
DINSPECT:
DB 0 ; INSPECT FILES (DEFAULT TO NO)
DDELAY:
DB 0 ; DELAY COUNT (DEFAULT TO 0)
;
; OTHER BUFFERS
;
SKIPFL:
DB 0 ; SKIP FLAG (DEFAULT TO NO)
SKIPNUM:
DS 2 ; PAGE NUMBER TO SKIP TO
LNUM:
DS 2 ; CURRENT LINE NUMBER
PNUM:
DS 2 ; CURRENT PAGE NUMBER
LNUMFL:
DB 0 ; LINE NUMBER FLAG (DEFAULT TO NO)
PAGEFL:
DB 0FFH ; PAGE NUMBER FLAG (DEFAULT TO YES)
INSPECT:
DB 0 ; INSPECT FILES (DEFAULT TO NO)
DELAY:
DB 0 ; DELAY COUNT (DEFAULT TO 0)
;
; Start of Program
;
START:
LXI H,0 ; GET STACK PTR
DAD SP
SHLD STACK ; SAVE IT
LXI SP,STACK ; SET SP
CALL PUTUD ; SAVE CURRENT USER/DISK AWAY
CALL RETUD ; GET CURRENT USER/DISK
MOV A,B ; SAVE DISK
STA DISK
MOV A,C ; SAVE USER
STA USER
CALL ZGPINS ; INIT BUFFERS
LXI H,TBUFF ; SAVE COMMAND LINE
CALL CLINE
SHLD CMDLNE ; SAVE PTR
;
; **** Banner of Program
;
CALL PRINT
DB 'PAGE, Version '
DB VERS/10+'0','.',(VERS MOD 10)+'0',0
;
; Check for Help Request
;
LDA FCB+1 ; GET FIRST CHAR OF FILE NAME
CPI ' ' ; NO FILE SPEC?
JZ HELP
CPI '/' ; OPTION CAUGHT?
JNZ ECONT
;
; **** Print Help Information
;
HELP:
CALL PRINT
DB CR,LF,'PAGE Command --'
db cr,lf,' PAGE is invoked by the following command line:'
db cr,lf,' PAGE file1,file2,...,filen o...'
db cr,lf,'where each "filen" is an ambiguous file name and type'
db cr,lf,'and "o" is zero or more of the following options:'
db cr,lf,' 0-9 Select Delay Constant'
db cr,lf,' I Inspect and Select Files First'
db cr,lf,' L Toggle Numbering of Each Line'
db cr,lf,' P Toggle Paging'
db cr,lf,' Snnnn Skip to Specified Page before Printing'
db cr,lf,'Examples:'
db cr,lf,' PAGE MYFILE.TXT,*.MAC LI'
db cr,lf,' -- Number Lines, Inspect Files'
db cr,lf,' PRINT MYFILE.* S25'
db cr,lf,' -- Skip to Page 25'
db cr,lf
db cr,lf,' While the displays are being printed, the user may'
db cr,lf,'strike ^C to abort PAGE, ^X to skip to next file,'
db cr,lf,'^S to suspend output (any key will resume, and ^C, ^X,'
db cr,lf,'P, and 0-9 are effective as commands at this point),'
db cr,lf,'P to toggle the paging, or a digit (0-9) to change'
db cr,lf,'the speed of the display'
DB 0
;
; RETURN TO OS
;
RETURN:
LHLD STACK ; GET OLD STACK
SPHL ; SET IT
RET
;
; PROGRAM'S INIT ROUTINE
;
ECONT:
CALL INIT ; PROG INIT ROUTINE
;
; EXTRACT FLAGS IF PRESENT
;
LXI H,0 ; SET FILE COUNT
SHLD FILECNT
LHLD CMDLNE ; PT TO BUFFER
;
; SKIP TO FILE NAME STRING
;
CALL SBLANK ; SKIP OVER BLANKS
;
; SKIP TO END OF FILE NAME STRING
;
CALL SNBLANK ; SKIP OVER NON-BLANKS
;
; CHECK FOR LEADING SLASH ON OPTION AND SKIP IT IF SO
;
OPT:
CPI '/' ; OPTION CHAR?
JNZ OPTION
INX H ; SKIP SLASH
;
; PROCESS LIST OF OPTIONS
;
OPTION:
MOV A,M ; GET BYTE
ORA A ; DONE?
JZ DSPEC
INX H ; PT TO NEXT CHAR
CPI ' ' ; SKIP OVER SPACES
JZ OPTION
MOV C,A ; COMMAND IN C
LXI D,OPTAB ; PT TO OPTION TABLE
OPTL:
LDAX D ; GET OPTION LETTER
ORA A ; END OF TABLE?
JZ HELP ; HELP IF SO
CMP C ; MATCH?
JZ OPTM ; PROCESS IF SO
INX D ; PT TO NEXT ENTRY
INX D
INX D
JMP OPTL
;
; PROCESS OPTION
;
OPTM:
PUSH H ; SAVE HL ON STACK
LXI H,OPTION ; GET RETURN ADDRESS
XTHL ; ... ON STACK AND RESTORE HL
INX D ; PT TO ADDRESS
LDAX D ; GET ADDRESS LOW
MOV B,A ; ... IN B
INX D
LDAX D ; GET ADDRESS HIGH
MOV D,A ; ... IN D
MOV E,B ; LOW IN E
PUSH D ; PUT ADDRESS ON STACK
MOV A,C ; COMMAND IN A
RET ; "CALL" OPTION ROUTINE
;
; **** PROGRAM INIT ROUTINE
; THIS ROUTINE IS USED BY THE PROGRAM TO PERFORM ANY INITS
;
INIT:
lxi h,dlnumfl ;copy defaults into buffers
lxi d,lnumfl
mvi b,4 ;4 bytes
call moveb ;do copy
xra a ;A=0
sta skipfl ;set no skip
RET
;
; **** OPTION TABLE
; EACH OPTION IS A CAPITAL LETTER OR SPECIAL CHAR FOLLOWED BY
; AN ADDRESS; THE TABLE IS TERMINATED BY A BINARY ZERO
;
OPTAB:
db '0'
dw optnum
db '1'
dw optnum
db '2'
dw optnum
db '3'
dw optnum
db '4'
dw optnum
db '5'
dw optnum
db '6'
dw optnum
db '7'
dw optnum
db '8'
dw optnum
db '9'
dw optnum
db 'I'
dw optinsp
db 'L'
dw optln
db 'P'
dw optpage
db 'S'
dw optskip
DB 0 ; END OF TABLE
;
; Set Delay Constant
;
optnum:
sui '0' ;set constant
sta delay
ret
;
; Toggle Inspect Option
;
optinsp:
lda inspect ;flip flag
cma
sta inspect
ret
;
; Set Line Number Flag
;
optln:
lda lnumfl ;flip flag
cma
sta lnumfl
ret
;
; Toggle Paging
;
optpage:
lda pagefl ;flip flag
cma
sta pagefl
ret
;
; Set Skip Flag and get number
;
optskip:
mvi a,0ffh ;set flag
sta skipfl
call eval10 ;get number
xchg
shld skipnum ;set page number to skip to
xchg ;HL pts to next char
mov a,d ;see if page number was zero
ora e
jnz option
xra a ;if zero, just turn off skip flag
sta skipfl
ret
;
; BEGIN MOVING THROUGH FILE NAMES, SEPARATED BY COMMAS
;
DSPEC:
LHLD CMDLNE ; PT TO FIRST BYTE
CALL SBLANK ; SKIP TO NON-BLANK
;
; MAJOR REENTRY POINT WHEN FILE SPECS ARE SEPARATED BY COMMAS
; HL PTS TO FIRST BYTE OF NEXT FILE SPEC
;
DSPEC1:
LXI SP,STACK ; RESET STACK
CALL GETUD ; RESET USER IF NECESSARY
LXI D,NTFCB ; PT TO FCB IN DE, PT TO FIRST CHAR OF FILE NAME IN HL
CALL ZFNAME ; EXTRACT FILE NAME INTO FCB, AND GET DISK AND USER
JZ DERR ; ERROR HANDLER
SHLD NEXTCH ; SAVE PTR TO DELIMITER WHICH ENDED SCAN
MOV A,B ; SAVE POSSIBLE DRIVE SPEC
CPI 0FFH ; CURRENT DISK?
JZ DSPEC2
LDA MDISK ; GET MAX DISK NUMBER
DCR B ; ADJUST TO WITHIN BOUNDS 0-15
CMP B ; WITHIN BOUNDS?
MOV A,B ; GET DISK NUMBER IN A
JNC USPEC
DERR:
CALL PRINT
DB CR,LF,'Invalid Disk Specification',0
JMP DRETURN
;
; SET CURRENT DISK
;
DSPEC2:
LDA DISK ;GET CURRENT DISK
MOV B,A ;... IN B
; CHECK FOR USER NUMBER
USPEC:
MOV A,C ; GET NEW USER NUMBER
CPI 0FFH ; DEFAULT USER?
JZ USPEC1
CPI '?' ; ALL USERS NOT ALLOWED?
JZ UERR
LDA MUSER ; GET MAX USER NUMBER
CMP C
MOV A,C ; USER NUMBER IN A
JNC FCT
UERR:
CALL PRINT
DB CR,LF,'Invalid User Number',0
JMP DRETURN
USPEC1:
LDA USER ;GET CURRENT USER
MOV C,A ;... IN C
;
; LOAD DIRECTORY AND PERFORM FUNCTION
;
FCT:
MOV A,B ; SAVE NEW DISK/USER AWAY
STA CDISK ; CURRENT DISK
MOV A,C
STA CUSER ; CURRENT USER
CALL LOGUD ; LOG INTO ACCOUNT
CALL CODEND ; PT TO END OF CODE
CALL RETUD ; GET USER NUMBER FOR DIRFS
MVI A,11000000B ; SELECT SYS AND NON-SYS FILES
ORA C ; OR IN USER NUMBER
LXI D,NTFCB ; PT TO FCB
CALL INITFCB ; INIT THE FCB
CALL DIRFS ; LOAD DIR, SELECT FILES, PACK, AND ALPHABETIZE
;
; DETERMINE BEGINNING OF SCRATCH AREA (SCRATCH) AND SIZE IN PAGES (BCNT)
;
PUSH H ; SAVE PTR AND COUNT
PUSH B
LXI D,ESIZE ; SET PTR TO NEXT FREE BLOCK
FCTFRE:
MOV A,B ; DONE?
ORA C
JZ FCTFR1
DAD D ; PT TO NEXT
DCX B ; COUNT DOWN
JMP FCTFRE
FCTFR1:
INR H ; NEXT PAGE
MVI L,0
SHLD SCRATCH ; SET PTR TO SCRATCH AREA
XCHG ; PTR IN DE
LHLD BDOSE+1 ; COMPUTE BLOCK BUFFER SIZE
MOV A,H ; ADJUST FOR ZCPR2
SUI 10
SUB D ; A=SIZE IN BLOCKS
STA BCNT ; SET BLOCK COUNT
POP B ; RESTORE AND SAVE REGS
POP H
;
; ALLOW USER TO INSPECT FILES
;
PUSH H
PUSH B
CALL ICHECK ; CHECK FOR INSPECT OPTION AND INSPECT IF SET
POP B ; RESTORE COUNT AND PTR
POP H
;
; PERFORM FUNCTION; HL PTS TO FILE AND BC CONTAINS NUMBER OF FILES
;
FCTL:
MOV A,B ; CHECK FOR COMPLETION (COUNT = 0)
ORA C
JZ FCTL1
DCX B ; COUNT DOWN
LXI SP,STACK ; RESET STACK
PUSH B ; SAVE COUNT AND PTR
PUSH H
CALL FUNCTION ; PERFORM FUNCTION
FCTLNXT:
LXI SP,STACK-4 ; RESTORE STACK
POP H ; RESTORE PTR
POP B ; RESTORE COUNT
LXI D,ESIZE ; PT TO NEXT ENTRY
DAD D
JMP FCTL
;
; CHECK FOR NEXT FILE SPEC
;
FCTL1:
CALL GETUD ; RETURN TO BASE USER/DISK
LHLD NEXTCH ; GET PTR
MOV A,M ; GET DELIM
CPI ',' ; ANOTHER FILE?
JNZ DRETURN
INX H ; PT TO CHAR AFTER COMMA
JMP DSPEC1 ; CONTINUE PROCESSING
;
; **** EMERGENCY ABORT
;
ABORT:
CALL PRINT
DB CR,LF,'** PAGE Abort **',CR,LF,0
CALL GETUD ; RETURN HOME AND FALL THRU TO DRETURN
;
; **** FUNCTION COMPLETE -- CLEANUP AND EXIT
; FILL THIS IN WITH CLEANUP CODE FOR EXIT
;
DRETURN:
JMP RETURN
;
; **** INSPECT FILES -- THIS ROUTINE IS TO PERFORM A FILE INSPECTION
; ON INPUT, HL PTS TO FIRST 16-BYTE ENTRY AND BC=NUMBER OF ENTRIES
;
ICHECK:
mov a,b ;any files?
ora c
rz
push h ;save ptrs
push b
lxi d,esize ;size of entry
ichk1:
mvi m,0 ;clear MSBytes
dad d ;pt to next
dcx b ;count down
mov a,b ;done?
ora c
jnz ichk1
pop b ;restore ptrs
pop h
lda inspect ;inspect?
ora a ;0=no
rz
call print
db cr,lf,'PAGE File Inspect Mode',0
ichk2:
call print
db cr,lf,'Select ',0
call prfn ;print file name
call print
db ' -- (Y/N/Q=Select Rest/S=Skip Rest/other=Y)? '
db 0
call cin ;get response
call caps ;capitalize
call cout ;echo
cpi 'Q' ;select rest?
jz ichkyr
cpi 'S' ;skip rest
jz ichknr
cpi 'N' ;no to this one?
jnz ichk3
mvi m,0ffh ;set NO flag in file FCB
ichk3:
dad d ;pt to next one
dcx b ;count down
mov a,b ;done?
ora c
jnz ichk2
RET
; Check Rest of Files as Selected
ichkyr:
call print
db cr,lf,' Rest of Files Selected',0
ret
; Check Rest of Files as NOT Selected
ichknr:
mvi m,0ffh ;set NO flag
dad d ;pt to next
dcx b ;count down
mov a,b ;done?
ora c
jnz ichknr
call print
db cr,lf,' Rest of Files NOT Selected',0
ret
;
; **** FUNCTION -- MAIN FUNCTION OF TEMPLATE
; ON ENTRY, HL PTS TO NAME OF FILE (16 BYTES) AND USER IS LOGGED INTO
; DIRECTORY CONTAINING INDICATED FILE
;
FUNCTION:
;
; FILE PAGE Routine -- Page the File Whose Name is Pointed to by
; HL; we are already logged into the correct directory
;
mov a,m ;file selected?
ora a ;0=yes
rnz
call prinit ;init print buffers
call fload ;load buffer initially
lhld scratch ;pt to first char in file
shld nxtln ;set pointer to next line
fprloop:
call prline ;print line of file
jnz fprloop ;done if EOF
call page ;advance to top of next page
call prfoot ;print footer
ret
;
; Init Print Buffers and Print File
Name
;
prinit:
lxi d,tfcb ;set up FCB
mvi b,12 ;12 bytes
call moveb
lxi h,0 ;HL=0
shld pnum ;set page number
shld lnum ;set line number
lda ctpp ;set line count
dcr a ;1 less for first line
sta lcount
call print
db cr,lf,'PAGE File: ',0
lxi h,tfcb ;print file name
call prfn
call crlf
ret
;
; FILE LOAD (FLOAD) Routine -- Initial Load of memory buffer
;
fload:
lxi d,tfcb ;pt to file fcb
call initfcb ;init file's fcb
call f$open ;open file for input
jz fload1 ;open was OK
call print
db cr,lf,'File ',0
xchg ;HL pts to FCB
call prfn ;print file name
call print
db ' NOT Found',0
pop d ;clear return address
ret ;abort printout of this file
;
; This is an entry point for further memory loads of the file
;
fload1:
lda bcnt ;get number of blocks to load
mov c,a ;... in C
lhld scratch ;get address of first block to load into
shld nxtblk ;set pointer to next block to load
fload2:
call rdblk ;read a block (128 bytes)
jnz eof ;eof encountered?
call rdblk ;read another block (128 bytes)
jnz eof ;eof encountered?
dcr c ;count down
jnz fload2
lhld nxtblk ;pt to next byte to load
mvi m,eold ;mark end of load
ret
eof:
lxi d,tfcb ;close file
call f$close
lhld nxtblk ;ensure ^Z
mvi m,ctrlz
ret
rdblk:
lxi d,tfcb ;pt to FCB
call f$read ;read next block
ora a ;error?
rnz
lhld nxtblk ;get ptr to next block
xchg ; as dest
lxi h,tbuff ;ptr to DMA address
mvi b,128 ;copy 128 bytes
rdblk1:
mov a,m ;get byte
ani 7fh ;mask out msb
stax d ;put byte
inx h ;pt to next
inx d
dcr b ;count down
jnz rdblk1
xchg ;new nxtblock
shld nxtblk
ret
;
; Line Print Routine
; Print Next Line with Optional Disk Load
; Input Parameter is NXTLN, which is the address of the first char
; on the next line
; Output Parameter is Zero Flag, with Z meaning done with print, NZ
; meaning more yet to print
;
prline:
lhld lnum ;increment line number
inx h
shld lnum
lhld nxtln ;pt to first char of next line
mvi c,0 ;init char count
mov a,m ;get first char of line
cpi ctrlz ;EOF?
cnz prlnum ;print line number (optional)
prl1:
mov a,m ;get char
cpi eold ;end of load?
jz prload
cpi ctrlz ;eof?
jz prexit
inx h ;pt to next char
cpi ctrli ;tab?
jz prtab
cpi cr ;<CR>?
jz prcr
cpi ff ;form feed?
jz prff
cpi lf ;end of line?
jz prldn
cpi ctrlh ;back space?
jz prbs
cpi ctrlg ;ring bell?
jz prbell
cpi del ;delete char?
jz prl1 ;skip it
cpi ' ' ;other control char?
jc prl1 ;skip if other control char
call prout ;print char
inr c ;increment char count
call eoltest ;check to see if at end of line and newline if so
jmp prl1
;
; End of Load Reached -- Load More of File from Disk
;
prload:
push b ;save char count
call fload1 ;use load routine
pop b ;get char count
lhld scratch ;next byte is here
jmp prl1 ;continue processing
;
; Tabulate
;
prtab:
mvi a,' ' ;space
call prout
inr c ;new char
call eoltest ;process EOL
mov a,c ;done?
ani 7
jnz prtab ;continue tabulation
jmp prl1 ;continue processing
;
; Exit with Zero Flag Set if Done
;
prexit:
xra a ;set zero flag
ret
;
; Carriage Return -- Reset Character Count and Continue
;
prcr:
call prout ;send CR to printer
mvi c,0 ;reset char count
jmp prl1 ;continue processing
;
; Form Feed -- Advance to Top of Next Page
;
prff:
call page ;page eject with heading
mvi c,0 ;reset char count
jmp prl1 ;continue processing
;
; Line Feed -- End of Routine
;
prldn:
call prout ;echo LF to printer
shld nxtln ;set ptr to first char of next line
mvi a,0ffh ;set not done
ora a ;set flags
ret
;
; Backspace on Printer
;
prbs:
mov a,c ;check for beginning of line
ora a
jz prl1 ;continue if at BOL
mvi a,ctrlh ;backspace
call prout
dcr c ;back up char position
jmp prl1 ;continue
;
; Ring Bell on Printer
;
prbell:
call prout ;ring the bell
jmp prl1 ;continue without advancing char position
;
; Test for End of Line and Process if so
;
eoltest:
lda cwidth ;get line width
sui 4 ;4 chars less for continuation mark
mov b,a ;result in B
lda lnumfl ;line numbering (lines are 7 chars shorter if so)
ora a ;0=no
jz eolt1
mov a,b ;reduce by 7 for line numbers
sui 7
mov b,a
eolt1:
mov a,b ;get line width
cmp c ;there?
rnz ;continue if not
mov a,m ;get next char
cpi cr ;new line next?
rz ;continue if so
cpi ctrlh ;backspace next?
rz ;continue if so
mvi a,' ' ;print continuation chars
call prout
mvi a,'<'
call prout
mvi a,'<'
call prout
mvi a,cr ;new line
call prout
mvi a,lf
call prout
mvi c,0 ;reset char position
lda skipfl ;skipping?
ora a ;0=no
rnz
lda lnumfl ;printing line numbers?
ora a ;0=no
rz
call print
db ' : ',0
ret
;
; Output a character to the console
; A = Character
;
prout:
mov b,a ;char in B
call cst ;check for abort
jnz prout1
call ctrlin ;get control input
prout1:
lda skipfl ;skipping?
ora a ;set flags (Z=no skip=print char)
mov a,b ;restore char
cz ctrlout ;send character to printer
cpi lf ;special tests if it is a line feed
rnz ;done if non-LF char
lda lcount ;decrement line counter
dcr a
sta lcount
rnz
;
; Paging Required
; Skip to top of next page; reset LCOUNT (Lines Left on Page Count);
; increment PNUM (Screen Number); test for skip stop; print header
;
prout0:
lda ctpp ;get number of text lines per page
sta lcount ;set as new line count
push h ;save ptr
lhld pnum ;increment page number
inx h
shld pnum
lda cspp ;number of lines to skip
call lineskp ;skip lines
pop h ;restore ptr
mov a,m ;check next character
cpi ctrlz ;EOF?
cnz prfoot ;print 1-line footer
lda skipfl ;skipping?
ora a ;0=no
push h
cnz skiptst ;affects HL
pop h
ret
;
; Skip out rest of page
; Form Feed Function
;
page:
lda lcount ;get count of remaining lines
call lineskp ;skip lines
jmp prout0 ;process top of new page
;
; Skip out lines on page
;
lineskp:
mov b,a ;line count in B
ora a ;any?
rz
lda skipfl ;skipping?
ora a
rnz
lda pagefl ;paging?
ora a
rz
lines1:
mvi a,cr ;output new line to printer
call cout
mvi a,lf
call cout
dcr b ;count down
jnz lines1
ret
;
; Control Input
; CTRLIN -- Main Routine Entry Point; Implements Dynamic Commands,
; including P, 0-9, ^S, ^X, and ^C
; CTRLCS -- ^S Reentry Point; Implements all Dyanamic Commands except ^S
;
ctrlcs:
call cin ;get input
jmp ctrlns
ctrlin:
call cin ;get input
cpi ctrls ;pause?
jz ctrlcs
ctrlns:
call caps ;capitalize
cpi ctrlc ;abort?
jz abort
cpi ctrlx ;skip to next
jz fctlnxt
cpi 'P' ;page now?
jz ctrlip
cpi '0' ;delay?
rc
cpi '9'+1
rnc
sui '0' ;convert to binary
sta delay ;set delay count
ret
ctrlip:
lda pagefl ;toggle paging
cma
sta pagefl
ret
;
; Control Output
;
ctrlout:
push psw ;save char
call cout ;output char
lda delay ;pause?
ora a ;any delay?
jz ctrloz
push h ;delay
push b
mov b,a ;delay count
del1:
lxi h,500 ;delay constant
del2:
xthl ;long NOP
xthl
dcx h ;count down
mov a,h ;done?
ora l
jnz del2
dcr b ;count down
jnz del1
pop b ;restore regs
pop h
ctrloz:
pop psw ;restore A
ret
;
; Print Line Number (optional)
;
prlnum:
lda skipfl ;skipping?
ora a ;0=no
rnz
lda lnumfl ;get flag
ora a ;0=don't number lines
rz
push h ;save ptr
lhld lnum ;get line number
call phldc ;print line number
call print ;print separator
db ': ',0
pop h ;restore ptr
ret
;
; Print 1-line footer
;
prfoot:
lda skipfl ;skipping?
ora a ;0=no
rnz
lda pagefl ;paging?
ora a
rz
push h ;save ptr
call prpnum ;print page heading and number
call prdash ;print dash
lxi h,tfcb ;pt to file FCB
call prfn ;print file name
pop h ;restore ptr
call print
db ' -- Strike Any Key ',0
call ctrlin ;get control response
jmp crlf ;new line
;
; Test for completion of skipping
;
skiptst:
lhld pnum ;get page number
inx h ;increment for test
xchg ;... in DE
lhld skipnum ;get page to skip to
mov a,h ;compare them
cmp d
rnz
mov a,l
cmp e
rnz
xra a ;A=0 to stop skipping
sta skipfl ;set flag
ret
;
; Print Page Number
;
prpnum:
call print ;print header
db 'Screen ',0
lhld pnum ;print current page number
call phldc ;print as decimal
ret
;
; Print Separator
;
prdash:
call print
db ' -- ',0
ret
;
; UTILITIES
; SBLANK -- SKIP BLANKS PTED TO BY HL UNTIL NON-BLANK ENCOUNTERED; HL
; SNBLANK -- SKIP NON-BLANKS PTED TO BY HL UNTIL BLANK OR EOL; HL
; PRFN -- PRINT FILE NAME PTED TO BY HL; AFFECT NOTHING
;
;
; SKIP UNTIL NON-BLANK
;
SBLANK:
MOV A,M ; LOOK FOR BLANK
INX H ; PT TO NEXT
CPI ' ' ; BLANK?
JZ SBLANK
DCX H ; BACK UP
RET
;
; SKIP UNTIL BLANK OR EOL
;
SNBLANK:
MOV A,M ; GET CHAR
INX H ; PT TO NEXT
CPI ' ' ; BLANK?
JZ SNB1
ORA A ; EOL?
JNZ SNBLANK
SNB1:
DCX H ; BACK UP
RET
;
; PRINT FILE NAME PTED TO BY HL
; OUTPUT TO CON:
;
PRFN:
PUSH H ; SAVE REGS
PUSH B
CALL RETUD ; GET CURRENT USER/DISK
MOV A,B ; PRINT DISK
ADI 'A' ; LETTER
CALL COUT
MOV A,C ; PRINT USER
CALL PADC
CALL PRINT
DB ': ',0
INX H ; PT TO FILE NAME
MVI B,8 ; PRINT NAME
CALL PRNT
MVI A,'.' ; DECIMAL
CALL COUT
MVI B,3 ; PRINT TYPE
CALL PRNT
POP B ; GET REGS
POP H
RET
;
; PRINT CHARS PTED TO BY HL FOR B BYTES
; OUTPUT TO CON:
;
PRNT:
MOV A,M ; GET CHAR
CALL COUT
INX H ; PT TO NEXT
DCR B ; COUNT DOWN
JNZ PRNT
RET
;
; BUFFERS
;
DISK:
DS 1 ; HOME DISK NUMBER
USER:
DS 1 ; HOME USER NUMBER
CDISK:
DS 1 ; CURRENT DISK NUMBER
CUSER:
DS 1 ; CURRENT USER NUMBER
CMDLNE:
DS 2 ; PTR TO COMMAND LINE STRING
NEXTCH:
DS 2 ; PTR TO NEXT CHAR IN MULTIFILE COMMAND LINE
FILECNT:
DS 2 ; COUNT OF NUMBER OF FILES RENAMED
SCRATCH:
DS 2 ; ADDRESS OF FIRST BYTE OF SCRATCH AREA
BCNT:
DS 1 ; NUMBER OF PAGES IN SCRATCH AREA
NTFCB:
DS 36 ; FCB FOR NEW FILE
;
; PAGE Buffers
;
tfcb:
ds 36 ; FCB for current file
nxtblk:
ds 2 ; pointer to next block to load
nxtln:
ds 2 ; pointer to next line to read
lcount:
ds 1 ; count of text lines left on page
;
; Stack
;
DS 100 ; STACK AREA
STACK:
DS 2 ; OLD STACK PTR
