Questions tagged [msx]

For questions about the MSX standard or about computers, hardware or software conforming to the MSX standard.

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No syntax-error message from MSX BASIC `SCREEN` command

On bluemsx, for the machine just labelled MSX, adding a '.' full-stop after SCREEN 2 and typing various different types of rubbish does not generate a syntax error message . SCREEN 2.11111 Noticed ...
13
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4answers
2k views

Accelerators for Z80 micros?

I am familiar with the various accelerator products that were developed over the years to improve the performance of popular 6502 home micros. A short list of the particularly well known devices would ...
12
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3answers
736 views

What is the Circuit for a 16K or 32K MSX computer cartridge?

This question is about the old MSX-1 computers. I have a game I wrote, as a ROM file, and I now want to play it on a real MSX computer by putting the game into cartridge form. The game has been ...
16
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2answers
2k views

How to decode an audio file which contains an MSX BASIC program? [closed]

I have an audio file in WAV format, which supposedly comes from a cassette sound file. Moreover, it contains a BASIC program, but I don't know how to decode it. I have tried to convert the wav file to ...
5
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1answer
287 views

How can I change the MSX function keys using ASM?

How can I change the texts assigned to MSX function keys using Z80 ASM?
3
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1answer
333 views

Why didn't Famicom games use the Konami SCC for expansion audio?

There were a handful of Konami games on the Famicom that had additional sound chips (VRC6, VRC7, etc.) to enhance the audio of the games they were used in. Considering that the Famicom got many Konami ...
6
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2answers
612 views

How does the MSX2 game “pointless fighter” obtain a graphic above the average?

The Homebrew game "pointless fighter" (https://youtu.be/PReg7pPcbIY) has graphics and animations substantially better than most of the MSX2 games. Is there a technical breakthrough which permits such ...
13
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3answers
5k views

MSX Assembly/Basic programming documentation

I'd like to try to create software (and maybe simple games) for the MSX standard. I know I have two ways to do so, either I use MSX Basic or Z80 assembly. I think that Z80 assembly is more powerful ...
7
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1answer
339 views

ROM programs on the Sony MSX HitBit HB-501

I have acquired a Sony MSX HB-501 F (F stands for France, it only defines the keyboard's layout). It is fully functionnal, I can play games from cartridges on it and it displays MSX-BASIC if no ...
11
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3answers
1k views

Where can I find schematics for a simple first-generation MSX computer?

I know the basic specs of a first-generation MSX compliant computer. What I'm looking for are some schematics on how to build one. Something simple that, preferably, didn't use custom ICs that ...
10
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1answer
252 views

Which was the first true compatible MSX computer available in the market?

I'm talking about true MSX computers, not MSX-ish, or partially compatible MSX computers (Spectravideo 318, I'm looking at you).
18
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2answers
567 views

What are the common sources of incompatibility on different MSX computers?

I remember that a LOT of games for my MSX (I live in Brazil) don't work without some modification. For example, several need some kind of tweak on the loader, like poke -1,0. I would like to know ...
23
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5answers
2k views

How much benefit should be expected on a more advanced compiler for z80/r800 based computers?

I am self studying about compilers, and get hands on very good textbooks about the subject. I am thinking in develop a compiler using the almighty llvm infrastructure to cross compile to old computers,...