.dsk to .rom, is possible ?

Blinky was waaaaaay better, but still had some (very small) graphics corruption... but this time it looks random (sometimes appear in a random screen, sometimes it wont) - but even then it was pretty much playable

Hm, can you give more details about the loader? Is it sector based, msx-dos? Is the game loaded in 1-go, or does it load levels? Is it possible to compare, eg. via a save-state the contents of the ram after loading of the working diskimage with the romimage after loading?

Random, could it be something with interrupts being enabled where you want them to be disabled?

Can you make a screenshot; is the garbling random, or a fixed pattern (like before, white blocks?)

cas2rom requires patching of the bios; I think it should be possible (I have given it some thought before), though not all cas images will work; some games might not use the bios to load from tape (but use io instead), and some games probably won't like that the bios is placed in a cartridge slot.

Actually, there's no loader in Blinky, all graphics and music are compressed in the .COM, and expanded when needed, so the loading are pure MSX-DOS.

I don't think it's a problem with the actual loading of the file; I created a test comfile for msxdos with data 00 to ff for about 50kb, and it checks after loading if that data is there; the result was perfect.

A diskrom can include a custom interrupt handler, but this one doesn't; it does look like a problem with interrupts (because after the screen is drawn, and because of the randomness).

Just to be sure, the disk image itself doesn't have this problem? The problem is only after conversion? Can you try out the original dsk image and boot with control to enable just 1 drive (that comes close to environment of the dsk2rom diskrom).

Also, what's the original format of the dsk file (double sided, 720kb, f9)?

Oh, and one thing to add to the readme, how to make the ROM on MS-DOS:

copy dsk2rom.rom /b + yourdisk.dsk /b myrom.rom

I *think* the /b can be safely removed, but I use them just to be on the safe side

Also, if you plan to add compression, try bitbuster... it even has pc packer/depacker already, so it is halfway done

But I dont know how slower it will be... maybe two different programs, one with compression (for games that load once) and one without (for games that loads several times, even during gameplay)

But just an idea on how bitbuster is good... I bitbusted blinky.dsk, which shrank from 59k to 32k... add 16k from the dsk2rom, it gets to amazing 48k... now any MSX with 64k RAM would be able load it, even without MegaRAM or Mapper

I am going for pletter, the description on the xl2s site convinced me it performs better.