Home Page Forums MAME MAME The Newer All-Singing, All-Dancing 2023 WIP Thread

I've worked a bit on the Liberty Electronics Freedom 220 terminal:



Current status: Keyboard is implemented, receiving/sending data over serial works. The video emulation needs work. It uses the annoying SCN2674 display controller that can be hooked up in a million different ways, and there are no docs at all for this system.

More Namco System 10 progress (PR)! Every game that has a decrypter (and isn't a bad dump) is booting to at least the title screen now.

Kotoba no Puzzle Mojipittan got a redump so that is playable now. GAHAHA Ippatsudou and Golgo 13: Juusei no Chinkonka got the necessary I/O board emulation required for those to be fully playable now. Golgo 13 is missing BGM still because it uses MP3s instead of normal audio but is otherwise playable.

The previously mentioned patches for Ball Pom Line and NFL Classic Football are also no longer required. NFL Classic Football has all I/O except the trackball implemented, but the trackball not being implemented makes the game impossible to play still.

Peter Wilhelmsen and Samuel Neves have been working on the encryption for Namco System 10 games and have had some success, providing us with new decryption devices for GAHAHA Ippatsudou), Golgo 13: Juusei no Chinkonka, Sekai Kaseki Hakken, and Pacman BALL. The remaining games have things about them that make them tougher so research is still ongoing, but a few new playable games is very solid progress. Thank you Peter and Samuel.

Golgo 13: Juusei no Chinkonka

GAHAHA Ippatsudou

Kotoba no Puzzle Mojipittan

Is May Golgo 13 month?



I added the CD-i Golgo 13 game earlier this month (apparently it was dumped last year and... no one told me) and Vas approved the submission yesterday. The bottom of the screen is glitched but it's fully playable.

I intend to add more of the recent Redump items (and verify those dumps against the existing ones) but I need more hard drive space and an upload speed that doesn't suck. :p

It was dumped and hoarded. A regular at Lost Media Wiki got a copy on e-bay, dumped and uploaded it earlier this month, apparently prompting the hoarder to also upload it since it was in the wild. The modification date on the file is just that – the date the hoarder originally archived it.

Indeed there were some checks on audio registers likely used for syncing. Unblocking that and implementing some registers for a realtime clock fixed all the hangs I found so far.

In the meantime, I've also figured out the tablet input, so here's another wip for it. Still need to do the storyware input to try out most functionality in games.

[video:youtube][/video]

40 Dreamcast games started booting after I flipped the DRDY signal to actually be true in config (pending more investigation).
Too many snaps, so I'm gonna shamelessly crosspost to my Twitter:
https://twitter.com/DonKaleAEX/status/1649910635197497345

ETA: Bangai-oh surprisingly playable at 99.02% on extensive playthrough on high end machines:

The Omron Luna 88K² is now booting and running UniOS from a hard disk image. Although the "XP" is still not working (due to unemulated CPU features), it's not really necessary to use the system. At this point, the emulation of the MC88100 CPU and MC88200 CMMU are reasonably solid (at least for single-CPU configurations), and should allow some of the other 88k systems, particularly the DG AViiON, to progress a bit further. The earlier Omron Luna 88K should also be relatively straightforward to support if firmware ever shows up because the two systems are very similar.

The emulation supports the LCD status display (although the colours are not accurate):



Here's UniOS starting up:



It can compile something (it has both a Green Hills compiler and an ancient version of gcc) and talk to the internet so I think it counts as "working":

Very cool to see another workstation architecture get this far.

I got an IBM PS/2 Speech Adapter in the mail a week or so ago. It's an ISA card containing both a 5220 and an MC3418 CVSD chip, an ISA clone of the PCjr's speech sidecar. Unfortunately, I only have the manual and BIOS listings for the PCjr version so finding the differences to get the ISA version to work properly (mainly its 8254 behavior) is a challenge. It can play back CVSD recordings off of a demo floppy and LPC speech from edutainment software, but there's still a problem with LPC interrupts that makes the card flip out if you switch sounds too fast. MAME also doesn't support CVSD encoding, just decoding. Here's a video of it in action: https://twitter.com/LuigiThirty/status/1650760428883005441?s=20

Working on this one currently:



It's a computer that was described in a magazine (mc, we already have one other computer of them in MAME). You could build it yourself or order a pre-built kit. Available operating systems for it are CP/M-68k and OS/9. Some infos and pictures are available in this thread: https://forum.classic-computing.de/forum/index.php?thread/28014-der-mc-68000-computer/

The monitor is already usable:



I don't currently have any disk images though.