Search found 111 matches

by sigflup
Thu Feb 06, 2014 9:08 am
Forum: Megadrive/Genesis
Topic: Game Genie formula
Replies: 4
Views: 4065

Game Genie formula

Anyone know how do decode game genie codes? ie this address turns to this data
by sigflup
Thu Feb 06, 2014 7:07 am
Forum: Demos
Topic: VGM Driver Update
Replies: 38
Views: 22888

The average 68k memory access for my musicdisk is about 8.8Kb/s. That equates to at most 1.6K cycles lost on the 68k's clock every NTSC frame. Which isn't that bad, I guess. About how many instructions would you as assume 1.6k cycles is? personal stuff.... I'm noticing skipping on my program and I t...
by sigflup
Thu Feb 06, 2014 3:37 am
Forum: Megadrive/Genesis
Topic: reset the z80 twice in one prod? whaaaaa?
Replies: 8
Views: 6023

reset the z80 twice in one prod? whaaaaa?

Is there a way to reset the z80 at least twice in one program? I'm having trouble doing this.
by sigflup
Thu Feb 06, 2014 2:45 am
Forum: Megadrive/Genesis
Topic: silly question: z80 and 68k cycles.
Replies: 7
Views: 4868

THANK YOU SO MUCH FOR YOUR WORK!!
by sigflup
Thu Feb 06, 2014 2:28 am
Forum: Megadrive/Genesis
Topic: silly question: z80 and 68k cycles.
Replies: 7
Views: 4868

silly question: z80 and 68k cycles.

Does accessing the 68K bank from the Z80 take away 68K cycles?
by sigflup
Wed Feb 05, 2014 8:33 pm
Forum: Tools
Topic: genhead, header generator.
Replies: 0
Views: 8795

genhead, header generator.

This program I found on my old hdd that I wrote some while ago. It's a rom header generator. enjoy http://theadesilva.com/genhead.tgz
by sigflup
Sat Feb 01, 2014 4:57 pm
Forum: Demos
Topic: VGM Driver Update
Replies: 38
Views: 22888

YESSSSSSSSSSSSSS!!!!!!!!!!!!!!!!! Getting rid of that 67 66 00 00 00 00 totally worked
by sigflup
Sat Feb 01, 2014 4:42 pm
Forum: Megadrive/Genesis
Topic: ldscript
Replies: 6
Views: 4539

just for fun. I like having minimal source code, it's an aesthetic thing
by sigflup
Sat Feb 01, 2014 4:46 am
Forum: Demos
Topic: VGM Driver Update
Replies: 38
Views: 22888

Not sure why this track doesn't play well yet.....http://theadesilva.com/track4.vgm
by sigflup
Sat Feb 01, 2014 2:20 am
Forum: Demos
Topic: VGM Driver Update
Replies: 38
Views: 22888

Here's my patched version: http://theadesilva.com/vgm_drv.h It's a real ugly hack but provides some usefulness if you're making a musicdisk *ehem*. z80 ram address 0x1a00 contains fm_bank z80 ram address 0x1a01 contains psg_bank z80 ram address 0x1a03 contains stop fm_bank is incremented by one ever...
by sigflup
Fri Jan 31, 2014 10:12 pm
Forum: Megadrive/Genesis
Topic: ldscript
Replies: 6
Views: 4539

Works on 4.2.1, which i use. It's just for me,.i don't really care too for c++. my OS lags gcc so I'm not going to get the newest for a while. When that happens, I'll fix it when it breaks
by sigflup
Fri Jan 31, 2014 7:36 pm
Forum: Megadrive/Genesis
Topic: ldscript
Replies: 6
Views: 4539

ldscript

I've got my ldscript down to: SECTIONS { .text 0x00000000: { *(.text) . = ALIGN(0x4); *(.rodata) } .data : { . = ALIGN(0x4); *(.data) } .bss 0xff0000 : { *(.bss) } } Does anyone else have anything smaller? Basically I don't initialize data on declaration- a minor inconvenience
by sigflup
Thu Jan 30, 2014 7:21 am
Forum: Demos
Topic: Zontar's Mega Swirl
Replies: 7
Views: 15373

Looks very nice. I like the opening screen and it's music
by sigflup
Wed Jan 29, 2014 1:09 am
Forum: Demos
Topic: VGM Driver Update
Replies: 38
Views: 22888

in VGM_debug, what is bank_8x and bank_bkp? The rest make sense to me
by sigflup
Thu Dec 19, 2013 3:59 pm
Forum: Demos
Topic: 3D on the Sega Genesis is possible
Replies: 35
Views: 32342

very very nice!