Search found 267 matches

by cero
Sat Jan 25, 2020 10:52 am
Forum: SGDK
Topic: Convert PCM to XGM
Replies: 4
Views: 124

Re: Convert PCM to XGM

I suppose he wants to emulate a WAV using either synth or PSG, like those ancient speech synthesizers did. It'd sound bad/metallic/robotic/etc, and I don't think any such kit exists for Genesis.
by cero
Wed Nov 27, 2019 10:14 am
Forum: SGDK
Topic: m68k at risk of being dropped from gcc 11
Replies: 7
Views: 1802

Re: m68k at risk of being dropped from gcc 11

m68k has been saved.
by cero
Mon Nov 25, 2019 8:22 am
Forum: Tools
Topic: Aseprite Mega Drive Digitizer
Replies: 10
Views: 2314

Re: Aseprite Mega Drive Digitizer

Software solution to a hardware problem ;) The quick solution would have been a composite out for your computer.

This is still cool, and one more use of the usb connection is good.
by cero
Wed Oct 30, 2019 7:10 pm
Forum: SGDK
Topic: m68k at risk of being dropped from gcc 11
Replies: 7
Views: 1802

m68k at risk of being dropped from gcc 11

The m68k backend is at risk of being dropped from gcc release 11. It uses some old conventions, and needs to be updated. There's a bounty open, currently 5,3k $: https://www.bountysource.com/issues/80706251-m68k-convert-the-backend-to-mode_cc-so-it-can-be-kept-in-future-releases Having a modern gcc ...
by cero
Fri Oct 11, 2019 5:17 pm
Forum: SGDK
Topic: Sprite half in front of PLAN_A and the other half behind.
Replies: 8
Views: 1649

Re: Sprite half in front of PLAN_A and the other half behind.

You have another sprite covering your high-prio-bit sprite. That low-prio-bit sprite is higher in sprite priority, which means it covers your high-prio-bit sprite, but lower in the plane bit priority, which means it's below the high-prio plane. Tricks like this are commonly used back to the NES era ...
by cero
Sun Oct 06, 2019 8:12 am
Forum: SGDK
Topic: Help with crash
Replies: 5
Views: 1134

Re: Help with crash

You can try addr2line with the generated .elf file and that PC address. Verify with a debugging emulator, use the memory view and see what asm is at the pc address.
by cero
Tue Oct 01, 2019 5:54 pm
Forum: SGDK
Topic: SRAM read / write
Replies: 12
Views: 1837

Re: SRAM read / write

The linker script puts code first, then rodata. It's very unlikely for you to ever have 2mb of code.
by cero
Thu Sep 05, 2019 5:31 pm
Forum: Megadrive/Genesis
Topic: Megadrive was always the answer
Replies: 22
Views: 3668

Re: Megadrive was always the answer

"load ROMs quickly for development and debugging" -> both have an usb connection for that. ARM is just a detail.
by cero
Wed Sep 04, 2019 6:59 am
Forum: Megadrive/Genesis
Topic: Megadrive was always the answer
Replies: 22
Views: 3668

Re: Megadrive was always the answer

And the second UMDK and Mega Everdrive x7.
by cero
Sun Sep 01, 2019 7:12 am
Forum: Megadrive/Genesis
Topic: Megadrive was always the answer
Replies: 22
Views: 3668

Re: Megadrive was always the answer

Well yes, GOAC + output mixer + glue would be cheap to make, however the total market for any expansion is low. Even for official Sega ones.
by cero
Tue Aug 27, 2019 5:36 pm
Forum: Megadrive/Genesis
Topic: Sega Tech Docs archive
Replies: 26
Views: 7876

Re: Sega Tech Docs archive

Are the japanese disc docs in japanese?
by cero
Sat Aug 03, 2019 6:28 am
Forum: Video Display Processor
Topic: Seamless dungeon crawler effect
Replies: 11
Views: 3642

Re: Seamless dungeon crawler effect

http://nesdevcompo.nintendoage.com/contest17/
Inherent Smile was my entry for a NES compo, try it ;)
by cero
Mon Jul 29, 2019 6:24 am
Forum: Demos
Topic: Mega Man X
Replies: 16
Views: 12168

Re: Mega Man X

That happens with XGM if you forget to init that specific sfx. No idea if they use it though.
by cero
Tue Jun 18, 2019 6:44 am
Forum: Mega/SegaCD
Topic: FPGA cart of a Sega CD
Replies: 1
Views: 914

FPGA cart of a Sega CD

https://shop.terraonion.com/en/products ... ridge.html

There's now a FPGA version of the sega cd. Bit pricy though.