January Summary (Patreon)

This first month of 2020 has been pretty busy and positive.

Highlights

1. Public release of Black Tiger after fixing the background colour issue on higher levels2. Beta release of Double Dragon 2, with the support for a new ADPCM chip3. Video hardware of CAPCOM System 1 (CPS) implemented

Maintenance work

1. Fixed analogue video output of Double Dragon 1 and 22. Moved to latest official MiSTer framework (adding gamma support)3. Fixed direct video output (still doesn't work for everyone though)4. Fixed sprite issue on 19425. Fixed flip screen graphic glitches on 19436. Fixed timing related errors on all IP except the MCU's (this means more stable cores)

CPS Work

I started studying the system and translating the schematics. The graphical subsystem is completed to some 80% now, probably enough for most games. The interface with the SDRAM and the main CPU is also in place now. So I am hooking it up now with the video. I'm hoping to get Ghouls'n Ghosts working rather soon.

Other important task I'm involved at, in conjuction with Sebdel, Bruno and keeping other developers in the loop, is to expand the MRA file definition to support the 200+ ROM sets for CPS. Sebdel is also making a tool so users of non MiSTer platforms can also use the MRA format. This also makes development easier for digital designers working on cores.