Search found 2937 matches

by Stef
Thu May 16, 2019 9:31 am
Forum: SGDK
Topic: Sega Genesis Dev Kit (SGDK)
Replies: 785
Views: 335722

Re: Sega Genesis Dev Kit (SGDK)

To be honest i completely forgot about the zlib discussion we had before (i couldn't really remember from where my zlib came :D) If it was really useful for you, i would say that you should keep it aside (the unit is 100% independent) but definitely i don't want to confuse users with that zlib unit ...
by Stef
Wed May 15, 2019 9:44 am
Forum: SGDK
Topic: Sega Genesis Dev Kit (SGDK)
Replies: 785
Views: 335722

Re: Sega Genesis Dev Kit (SGDK)

Sorry to heard that cero... free feel to stay on old SGDK but you will miss some nice additions from the last SGDK. I can understand that you don't want to "pollute" your computer with Java but honestly there is no way to develop rescomp in C as fast (and make it as powerful) as i can do it with Jav...
by Stef
Wed May 15, 2019 9:32 am
Forum: SGDK
Topic: Weird problem with sprites
Replies: 5
Views: 100

Re: Weird problem with sprites

Don't use BEST compression as it will slowdown a lot sprite update, you can keep NONE or FAST. I tried to have a look in your code but couldn't really find any "problems". Did you try to use 'debug' compilation ? So you can see error messages in GensKMod output dialog ? That is really useful to find...
by Stef
Tue May 14, 2019 2:20 pm
Forum: SGDK
Topic: Sega Genesis Dev Kit (SGDK)
Replies: 785
Views: 335722

Re: Sega Genesis Dev Kit (SGDK)

Updated SGDK to version 1.4 ! Check it out here : https://github.com/Stephane-D/SGDK/wiki/Download Full changelog COMPILER * RESCOMP - rewrote from scratch in java for easier evolution and easy multi OS support. - added smart sprite cutting (detect empty space in sprite) - many changes on SPRITE res...
by Stef
Mon May 13, 2019 8:35 am
Forum: SGDK
Topic: Configurable "out" folder location
Replies: 1
Views: 62

Re: Configurable "out" folder location

Interesting finding :) i think i got issue as well with the romhead inclusion, it's why i had to hardcode like this...
I need to verify it also work in windows / linux system as well as i know OSX as some weird behavior concerning case sensitiveness.
by Stef
Fri May 10, 2019 7:53 pm
Forum: Demos
Topic: MD-NICCC - a 3D Mega Drive experience by TiTAN
Replies: 42
Views: 1236

Re: MD-NICCC - a 3D Mega Drive experience by TiTAN

The 6502 uses 2 phases cycle, so first half cycle is used to set address while second half is use to read/write value.
by Stef
Fri May 10, 2019 2:14 pm
Forum: Blabla
Topic: Strong Buzz for new Amstrad CPC game
Replies: 11
Views: 266

Re: Strong Buzz for new Amstrad CPC game

Isn't that just a prerendered animation? Of course it is :D But even a pre-rendered animation that smooth and that big on a CPC is an accomplishment. The Z80 is terribly slow at copying memory and i don't think there are kind of DMA on this system (maybe the GX4000 has one for the sprite table).
by Stef
Fri May 10, 2019 2:11 pm
Forum: Demos
Topic: MD-NICCC - a 3D Mega Drive experience by TiTAN
Replies: 42
Views: 1236

Re: MD-NICCC - a 3D Mega Drive experience by TiTAN

No, the 7.67 Mhz 68000 is actually * slower * than the 2.68 Mhz 65C816 at accessing memory... it's why the 65C816 can work at 2 speeds, fast memory (ROM) were too expensive in 1990 so they voluntary limited it to 2.68 Mhz to reduce cost on RAM (which is fixed to work at 2.68 Mhz) and to maintain acc...
by Stef
Thu May 09, 2019 3:56 pm
Forum: Blabla
Topic: Strong Buzz for new Amstrad CPC game
Replies: 11
Views: 266

Re: Strong Buzz for new Amstrad CPC game

I have to admit i'm still very doubtful about the "3D car animation" part... but i have to admit I was quite impressed by their Batman Demo i never though it was possible to do that on a CPC so...
by Stef
Fri May 03, 2019 8:08 am
Forum: Mega/SegaCD
Topic: Questions on writing a new Mega CD emulator
Replies: 87
Views: 1905

Re: Questions on writing a new Mega CD emulator

Indeed very interesting package Nemesis ! Extracted from equates.asm : ;drive command nibbles CMD_NOP EQU $0 ;nop command CMD_STOP EQU $1 ;stop motor CMD_REPORTREQ EQU $2 ;change report type CMD_READ EQU $3 ;read ROM data CMD_SEEK EQU $4 ;seek to a given location CMD_PAUSE EQU $6 ;pause the drive CM...
by Stef
Thu May 02, 2019 8:55 am
Forum: Mega/SegaCD
Topic: Questions on writing a new Mega CD emulator
Replies: 87
Views: 1905

Re: Questions on writing a new Mega CD emulator

In Gens i did it in a very hacky / simple way :
When DMA starts, If DMA source address comes from Word RAM (or CELL) region then i subtract 2 from the initial source address :D
Definitely hacky but working :D
by Stef
Tue Apr 30, 2019 7:52 am
Forum: SGDK
Topic: dealing with matrices (arrays)
Replies: 52
Views: 4719

Re: dealing with matrices (arrays)

There is many changes in the last SGDK and it's still experimental (it's why i didn't yet made an official release of it).
Be sure that your SGDK is up to date and that you rebuild the library from last sources yourself, if that is not the case you may experiences issues.
by Stef
Mon Apr 29, 2019 4:25 pm
Forum: SGDK
Topic: dealing with matrices (arrays)
Replies: 52
Views: 4719

Re: dealing with matrices (arrays)

You probably have a sprite.s file (generated from rescomp) that wasn't properly cleaned by make.
Do a full rebuild (clean / build) or remove manually the sprite.s file before recompiling your project.
by Stef
Mon Apr 29, 2019 1:17 pm
Forum: SGDK
Topic: Java-based rescomp not picking up flipped tiles?
Replies: 5
Views: 129

Re: Java-based rescomp not picking up flipped tiles?

Thanks for your report :D
by Stef
Mon Apr 29, 2019 10:28 am
Forum: Mega/SegaCD
Topic: Questions on writing a new Mega CD emulator
Replies: 87
Views: 1905

Re: Questions on writing a new Mega CD emulator

It was Steve Snake (the author of KGen then Kega), he probably has some "internal" information as he did worked on some Sega titles back in time, but if they probably had a complete BIOS documentation, i think they didn't had much more than us about the CDD itself as BIOS was doing the job to hide l...