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Post AuJIOvmIZb9e1iCKrQ by [email protected] |
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More posts by [email protected] |
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Post #AuEEMMLFywGNwAGgJU by [email protected] |
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Hacking on a "new" game today: Brøderbund's 1989 DOS game Playro… |
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Post #AuEEROnkGUR70rzq2C by [email protected] |
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I'd already gotten this game into my ghidra because I was checking to see i… |
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Post #AuEEUTOVe2js7uesiW by [email protected] |
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some code and specs they've made:https://github.com/PeterSwinkels/ThePlayro… |
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Post #AuEEbWnROVL6hmgSkS by [email protected] |
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It's definitely compressed. Here's what TITLE.PES looks like in binxelv… |
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Post #AuEEyZsq5BkCwLCS3c by [email protected] |
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@foone Oh my fuck I remember that one fondly. |
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Post #AuEFKzCicbxvqEBRNw by [email protected] |
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@foone I used to have this game as a kid. The Mac version though. I somehow bro… |
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Post #AuEFKzJSDZLyB7Kosq by [email protected] |
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@endrift I'm sure that was the last time you messed around with a program s… |
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Post #AuEFLd3uQmgbSUMyCu by [email protected] |
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they seem to be opening title.PES 4 times on load.that seems less than optimal |
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Post #AuEFYH55T1T33AwytE by [email protected] |
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maybe it's loading the file once per plane? this is a CGA/EGA game, after a… |
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Post #AuEG60fuyEMe0vGQ6K by [email protected] |
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8b5606 MOV DX, word ptr [BP + param_1 ]8b5606 MOV DX, word ptr [BP + param_1 … |
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Post #AuEHs7EK0Dm2CJrHPc by [email protected] |
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@foone Reminds me of something similar on the C128 where a specific instruction… |
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Post #AuEIS5iv55HBwzKChs by [email protected] |
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@fluchtkapsel ooh, fun |
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Post #AuEM47LnmNylrbKs5Y by [email protected] |
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Progress. |
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Post #AuEM8IykUK1h5OY8Fk by [email protected] |
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@foone why are the two instructions addresses the same? |
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Post #AuEMRF2DNOMwM7CTeC by [email protected] |
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@StompyRobot that's not the address, that's the machine code |
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Post #AuESBeUxXE0qQBawme by [email protected] |
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found a picture of the original disks on ebay: it comes on three disks, labeled… |
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Post #AuESbxX9NtsQzIAE8e by [email protected] |
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@foone Do we have proper images of those disks yet (and how much are they on eb… |
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Post #AuESnTja0K482bTEdk by [email protected] |
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@JennyFluff yup! images (and flux level) here:https://archive.org/details/20240… |
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Post #AuESurrYh0aEtyj4fA by [email protected] |
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@foone beautiful <3 |
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Post #AuETjJuYgRaON6Bdc8 by [email protected] |
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so every time the game tries to open a file, it'll try first the current dr… |
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Post #AuETogToCZ3FoZETeS by [email protected] |
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also, it looks like only some versions of the game have 3 disks. Some (even 360… |
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Post #AuETrRoHCU1rBZ7jnM by [email protected] |
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there's two copies on the internet archive that are 2-disk:https://archive.… |
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Post #AuEU225JBdR8aM8bQ0 by [email protected] |
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there's also apple II, macintosh, amiga, fm towns, and windows 3.x versions… |
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Post #AuEUnGttv1fk9AKLmi by [email protected] |
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@foone CBF typing the opcode for NOOP, just copy & paste the last assembly … |
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Post #AuEV2LUj7Y60jqjwrA by [email protected] |
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@foone I converted the flux image to scp via greaseweazle and having a look at … |
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Post #AuEVBdPJtI1ItsdlOi by [email protected] |
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@JennyFluff I'll get around to it later, right now I'm focusing on the … |
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Post #AuEVGCZ17cvl5uM0Iq by [email protected] |
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@foone :blobcatheart: |
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Post #AuEXDzI5hR3zG3VblI by [email protected] |
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@foone FM towns?That's a weird one, I can see why all other versions would … |
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Post #AuEXDzOTJiARZqUhhw by [email protected] |
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@Devourer_ITA several broderbund games had fm-towns ports, they were translated… |
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Post #AuEYTfHDyjx9m08v2W by [email protected] |
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@foone ah! |
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Post #AuEcpZ5o3FrymTV5VI by [email protected] |
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@foone that's interesting, might look it up tomorrow when I have timeMakes … |
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Post #AuEcpZBpgqgr5AJttg by [email protected] |
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@Devourer_ITA I think it was relatively easy to port DOS games to the FM-Towns,… |
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Post #AuFZRMO3X9oXijlNEe by [email protected] |
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@foone @Devourer_ITA PC-98 was arguably just as PC-compatible as the FM-Towns. … |
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Post #AuGHhbxjmvLidy0p7Y by [email protected] |
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@foone It was definitely the first time |
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Post #AuIiQkIIdzwwdhjSm8 by [email protected] |
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the eternal question:is this code completely stupid, or is ghidra decompiling i… |
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Post #AuIiTLJFzbNY1IQ07U by [email protected] |
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the answer is always "yes" |
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Post #AuIicPMuGsEFDMRqpk by [email protected] |
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my current theory is that the programmer was very superstitious and needed to d… |
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Post #AuIlIb9j2I8pqLWoqG by [email protected] |
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@foone Or, was the compiler misconfigured or just plain stupid? |
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Post #AuIlNAK8DzcS4ZZcqu by [email protected] |
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@foone 😂 like compiling with -O0? Or maybe declaring too many things as vola… |
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Post #AuIlPWr9Q6mYXG93aa by [email protected] |
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@acsawdey and I keep reversing code from the 80s/early 90s, when compilers were… |
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Post #AuIlVL2yEw8teARZzc by [email protected] |
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@foone Oh boy yes they were. “What, you want automatic register allocation?” |
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Post #AuIlgAVBmmPY7zo5dQ by [email protected] |
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I wonder if anyone has ever made a machine-code level inliner. like this code w… |
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Post #AuIllaBHju8RDZ4wG8 by [email protected] |
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as someone who can write 16bit x86 assembly, I endeavor to do as little of it a… |
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Post #AuIm5SVlxqYXDs8hEm by [email protected] |
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@SarraceniaWilds I'd wear it |
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Post #AuImDJJu1PQb25Kaqe by [email protected] |
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@foone That’s a slippery slope to writing a compiler 😑 |
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Post #AuImIMdv5wQ2mo6V0K by [email protected] |
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@acsawdey that's also on my todo list, for Doom reasons. |
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Post #AuImaq2eWrXfB5Tv1M by [email protected] |
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@foone My condolences. So you want something with decent optimization for 16-bi… |
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Post #AuIn3nspdIq0sihR3o by [email protected] |
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@acsawdey nah, that one is 32bit. I'm just compiling to a weird platform th… |
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Post #AuIn9h0w5NCHJYIYro by [email protected] |
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@foone So .. you just need a compiler that can compile Doom reasonably well? |
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Post #AuInMjUICUmMkaFPns by [email protected] |
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@acsawdey yeah. I need to be able to compile doom and target a new machine I… |
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Post #AuIvWhvZee6gRQH9Zg by [email protected] |
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@foone So like macros.Yes. ... old IBM 360 ASSM had a macro layer that was pret… |
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Post #AuJ7jPtzBRVDkaMLfk by [email protected] |
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@foone perfect attitude for a sizecoding compo! |
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Post #AuJ9LOYMkKXuWev76u by [email protected] |
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@foone Turbo Pascal.function Max(x: Integer, y: Integer) inline($xx, $xx,$xx);I… |
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Post #AuJHHDnbaU8veBZLqy by [email protected] |
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@foone Ooh, the old meaning of vibe based coding."This is a deeply cursed … |
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Post #AuJHLfSufPaMbw0iv2 by [email protected] |
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@n1vux @foone The PDP-10 assembler MIDAS has a very hairy and powerful macro sy… |
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Post #AuJHLi2n4zTMbmoP7Q by [email protected] |
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@n1vux @foone E.g. it can do a lot of computations at assembly time. |
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Post #AuJHQJkwoB8UjGfC0u by [email protected] |
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@foone I don't recall if 16bit i88 assm had much macro or not? But m4 or w… |
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Post #AuJHeuTt3yDygQdqZE by [email protected] |
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@n1vux @foone Did the SNA configurator work anything like the Rete-based system… |
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Post #AuJHeuaGgFKR0DcwVs by [email protected] |
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@rk @foone No, R1 was built on Rete/Rule infrastructure as was done in the 1980… |
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Post #AuJHeugeIWQtK0c2SW by [email protected] |
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@rk @foone Then I recognized that SNA configurator on prior project was an olds… |
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Post #AuJI0F7zUfoSndZXcG by [email protected] |
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. |
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Post #AuJIOvmIZb9e1iCKrQ by [email protected] |
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@foone I occasionally run into that with modern stuff; MSVC's LTO doesn'… |
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Post #AuJOKqTCxumU8BhgZ6 by [email protected] |
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@foone after the commodore no one needed assembly for most software anymore and… |
