Burn msx rom on a eprom

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Por ENDDEMOGAMITAINA

Paragon (1279)

imagem de ENDDEMOGAMITAINA

24-05-2011, 13:12

Hi all,I'm trying spend a MSX rom to eprom,but the EPROMs writer has too many options is needed burn the rom on ¿.ROM?or ¿.BIN?,if someone tried this could advise on the process,thanks in advance.

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Por RetroTechie

Paragon (1563)

imagem de RetroTechie

24-05-2011, 15:46

but the EPROMs writer has too many options (..)
What apparatus are you using to write the EPROM? And what EPROM type(s)? Don't understand "too many options" Question You need a writer that can handle the EPROM type you want to write, and you must make sure you're writing the correct data - but that's about it.

You'll probably want a 'flat binary' file with the EPROM's contents, that is for example if you're writing a 128Kbit EPROM, a file with exactly 16384 bytes binary data. Or 32768 bytes when writing a 256Kbit EPROM, etc. So no 7 byte header like .BIN saved with MSX. But if file format is correct, it probably shouldn't matter whether it's named *.ROM, *.BIN or anything. And some EPROM programmer software can handle .HEX files which is ASCII-like representation of EPROM data.

Por ENDDEMOGAMITAINA

Paragon (1279)

imagem de ENDDEMOGAMITAINA

24-05-2011, 17:06

Hello,the programmer is WILLEM TRUE USB GQ-3X,and the eprom M27C256B,and i try white parodius in a salamander PCB for example...,thanks Eek!.
Edit,my bad,is not the WILLEM programmer,the program CQ USB PROGRAMMER is who have to many optionsTongue,is needed BYTE SWAP?READ MODE normal?FILL MODE normal?

Por Jipe

Paragon (1499)

imagem de Jipe

24-05-2011, 18:41

27c256 = 32k
parodius and salamander = 128k
and the original mask rom have not the same pinout with an eprom
this is the bad way

Por ENDDEMOGAMITAINA

Paragon (1279)

imagem de ENDDEMOGAMITAINA

24-05-2011, 20:52

27c256 = 32k
parodius and salamander = 128k
and the original mask rom have not the same pinout with an eprom
this is the bad way

But But But 32k x 8Crazy,if not have space... why the programmer says write succes?and where can find info about the right eprom to use...?,it must be possibleEek!,i can find info on internet about how doing on megadrive or master system...super nes...even atari lynx oO but i cant find info about MSX Crazy,thanks you for reply and the info,Greetings.

Por Manuel

Ascended (18088)

imagem de Manuel

24-05-2011, 23:23

You can't run Konami megaROMs from EPROM without some special circuitry to implement the mapper mechanism...

Por ENDDEMOGAMITAINA

Paragon (1279)

imagem de ENDDEMOGAMITAINA

25-05-2011, 00:18

ALRIGHT!thanks guys i understand, is not so easy...,and COMPILE MEGAROMS?LOL!

Por muffie

Paladin (933)

imagem de muffie

25-05-2011, 00:33

If you're successful into burning something into a cart, I can send you several "marvelous converted" games from both ColecoVision and SEGA SG-1000. They ALL WORK PERFECTLY on any MSX machines, even the exotic ones...

Por RetroTechie

Paragon (1563)

imagem de RetroTechie

25-05-2011, 15:36

For MegaROMs you need 27C010 (1 Mbit) or equivalent. Or 27C020 for 2Mbit (or 2x 1 Mbit ROMs in one chip) / 27C040 for 4 Mbit like SolidSnake.

If plan is to write MegaROMs in a cart, I suggest you have a look at a MegaFlashROM SCC, or convert a Konami cart into an Ese-SCC. Much more flexible because re-writeable easily.

Por ENDDEMOGAMITAINA

Paragon (1279)

imagem de ENDDEMOGAMITAINA

25-05-2011, 17:04

Hello thx muffie,I think not get far...Eek!,thanks RetroTechie I sign these data,i have MegaFlashROM not SCC the 8mb version and works great,i started this"burn eproms"jut for curiosity but I see it is complicatedEek!,these problems are just with konamis?or with all MSX soft compile telenet...?thank you very much.

Por Manuel

Ascended (18088)

imagem de Manuel

25-05-2011, 20:47

All MegaROMs have a mapper mechanism that would have to be implemented with extra circuitry.

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