Fuzion CD bugs (still present in 1.6.1)

[nash67]

Fuzion cd 25
James Pond
freezes up on the title screen

[npomarede]

Fuzion cd 25
James Pond
freezes up on the title screen

Hello
this is fixed for the next version.
But basically, this crack is bugged and could potentially freeze even on a real ST. The disk access routines by NTM/The Replicants used here are waiting for bit 5 of $fffa01 to be cleared after each FDC command, but they also read the FDC's Status Register on each VBL (which set bit 5 of $fffa01).
This means that sometimes the FDC command will end during the VBL, but as the status register is read, the change in $fffa01 will be lost, and the main program waiting for the command to complete will wait forever. So, quite a bugged piece of code in this crack.

I had to improve the Read Sector command for some other programs, so hopefully it will add enough change in the FDC's cycles to prevent this to happen too often under Hatari too.

Nicolas

[npomarede]

Fuzion cd 84
ThunderHawk
stuck on title screen (doesn't detect fire button i think)

Hello
this game works with the latest dev version, but joystick is not supported on the tittle screen, you need to press left mouse button.
Could you check it works with 1.6 pre-version I sent you some times ago ?

Nicolas

[nash67]

Fuzion cd 84
ThunderHawk
stuck on title screen (doesn't detect fire button i think)

Hello
this game works with the latest dev version, but joystick is not supported on the tittle screen, you need to press left mouse button.
Could you check it works with 1.6 pre-version I sent you some times ago ?

Nicolas

yep still works

[nash67]

updated the first post

[npomarede]

I will continue the list from here as the first post is pretty big

Fuzion menu 111
Micropose Golf
stuck on the first screen (the greets screen)

Hello
it works, but you need to press 1 or 2 on the numeric keypad, the greets screen only tests for these 2 keys there.

Nicolas

[nash67]

updated the first post

[nash67]

can you check these 3 please


Fuzion Menu 161
bottom of the menu screen is cut off

Fuzion Menu 177
on the menu screen is all of the borders correct ???

Fuzion Menu 196
just let the menu run by itself and after the greetings screen the screen becomes messed up with flickering

Sensible Soccer v1.1
comes up with a black screen then crashes out
works in saint 2.14

[npomarede]

can you check these 3 please
Fuzion Menu 161
bottom of the menu screen is cut off

Yes, top border removal fails after a while and this breaks bottom border removal too. Needs to be fixed.

Fuzion Menu 177
on the menu screen is all of the borders correct ???

Borders are correct, it's just that Hatari displays more pixels than Steem/Saint, and this space was not used by the menu's coder.

Fuzion Menu 196
just let the menu run by itself and after the greetings screen the screen becomes messed up with flickering

I can get this under Steem too, does it work in Saint ? This could be a bug in the menu or a timing issues in the emulator that breaks top border removal and mess everything.

Sensible Soccer v1.1
comes up with a black screen then crashes out
works in saint 2.14

Seems to work in Steem too ; I need to check it later for Hatari.

Thanks for the reports

Nicolas

[nash67]

Fuzion Menu 196
just let the menu run by itself and after the greetings screen the screen becomes messed up with flickering

yep this works properly in Saint 2.20

[nash67]

Fuzion Menu 24
Coltris
every time you try to load the game it says low resolution only even though it is in low res
runs in Saint 2.20

Fuzion Menu 32
Take Two
every time you try to load the game it says low resolution only even though it is in low res

sorry just saw further up in the thread the answer with Take Two

[nash67]

Fuzion Menu 67
F1 - fix for cd58
if you want to repair Fuzion Menu 58 insert the disk then press space and it just keeps on coming up with disk error
works in Steem 3.2

[npomarede]

Fuzion Menu 24
Coltris
every time you try to load the game it says low resolution only even though it is in low res
runs in Saint 2.20

Fuzion Menu 32
Take Two
every time you try to load the game it says low resolution only even though it is in low res

sorry just saw further up in the thread the answer with Take Two

The problem in Fuzion 24 / Coltris is the same as with menu 32 : the menu restores $fc for the resolution instead of $00, which confuses the TOS (and as Coltris is a TOS game, not a direct video/hardware game, it doesn't work). To get it to work, change desktop to med res, then go back to low res. I think the problem will be the same on a real STF (but it should work on STE, where res register is different). It's possible it works under Saint because Saint doesn't set unused bit to 1 when reading $ff8260 as a real STF does.

Nicolas

[nash67]

could you please check out Fuzion Menu 104
bombs out on the menu
works in Steem 3.2

[ijor]

It's possible it works under Saint because Saint doesn't set unused bit to 1 when reading $ff8260 as a real STF does.

That's not accurate. It won't always set all unused bits to one.

[npomarede]

It's possible it works under Saint because Saint doesn't set unused bit to 1 when reading $ff8260 as a real STF does.

That's not accurate. It won't always set all unused bits to one.

Do you mean it works like the STF color registers where unused bits depend on the bus activity ? I didn't do deep tests on the STF, but I never saw a value of $ff8260 with bits 2-7 set to 0 ; maybe it happens less frequently than the color regs ?