Games that may damage PSG chips

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By friguron

Expert (82)

friguron's picture

19-05-2019, 04:45

I'm creating a .rom version for rocket roger... as a good Alligata game, it also has bad 0xFF writing to PSG registers... I've patched the new .rom data with a 0xBF (just one byte). As soon as I strengthen my slot/subslot ram detection routines, I'll publish the 32 KB rom file.

Greetings

By gdx

Prophet (2867)

gdx's picture

12-07-2019, 17:54

I never seen your version. Anyway I converted Rocket Roger to ROM myself. Many bytes had to be patched to fix the I/O port of the PSG. This is a beta version. I hope someone will want to test it.

RRTEST.ZIP

This version works in a primary slot only.

By iamweasel2

Hero (517)

iamweasel2's picture

12-07-2019, 18:10

Great work GDX, I love your conversions to ROM Format. Is there a web site where you put all of your work?

I hope someday you will convert Jackie Chan in Project A (there's a new english translated version with a new color screen done by Slotman) or Polar Star. Smile

By iamweasel2

Hero (517)

iamweasel2's picture

12-07-2019, 18:11

friguron wrote:

I'm creating a .rom version for rocket roger... as a good Alligata game, it also has bad 0xFF writing to PSG registers... I've patched the new .rom data with a 0xBF (just one byte). As soon as I strengthen my slot/subslot ram detection routines, I'll publish the 32 KB rom file.

Greetings

Great, looking forward to see your work Friguron. Smile

By gdx

Prophet (2867)

gdx's picture

16-07-2019, 09:15

I found this short manual on Generation-MSX:

The keys do not match what is indicated. All the versions I found on the net are the same. By cons, the keys are set almost as the Commodore 64 version.

This arrangement seems to me more pleasant to play. The available version had to be modified for this reason. By cons it is not valid for all types of keyboard.

So I will change the setting keys in my way in the next time. I will also add secondary slots support.

By gdx

Prophet (2867)

gdx's picture

17-07-2019, 09:23

The Rom conversion is finish. I make 3 versions. The version using cursor keys supports the joystick. And of course, PSG I/O ports are fixed and should work into a secondary slot.

Download: https://mon-partage.fr/f/Xs4iGyS4/

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