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

https://revenant1.net/psr150_song1_test.ogg
https://revenant1.net/psr150_song2_test.ogg
https://revenant1.net/psr150_troika_test.ogg

Haven't bothered making layouts yet, but I'm working on Yamaha GEW7 stuff at the moment. A lot of it is based on the existing GEW8/MultiPCM stuff that I refactored into a common base class, but there are still some slightly inaccurate or totally unknown things (envelope rates, sample properties, etc.)

That sounds great already! And I think common base classes for Yamaha sample player chips will be a much bigger thing as more of them are reverse-engineered.

I fixed up segment limit checks in i386 and added an IDE card to my MCA bus (SCSI would require a controller device and junk, IDE is just an option ROM and a connector), giving the PS/2 a hard drive to boot from.

A range of the later Psion Series 3 machines are in for 0.253, namely the Series 3a, 3c, 3mx, Siena, Workabout, and Acorn Pocket Book II.








All are quite usable at this stage and a selection of Solid State Disks of apps, games, utilities have been softlisted.


We are now able to dump internal ROM and Solid State Disks via serial link to PC, so if anyone has any Series 3 machines and Solid State Disks then get in touch to get them dumped.

First time posting here, just wanted to share that after the recent Sega Beena breakthroughs, I've been working on the existing skeleton driver. It's at a point where one of the tile planes is being correctly rendered, this one is used in the "no cartridge found" screen:

https://imgur.com/rX5Cj5g

A pull request will eventually follow, I still need to test the intro screens.

Nice!

I have a couple of Acorn PocketBooks and may a couple of SSDs, plus a serial link. I'll tell you if I find them around!

As it turns out, this has also led to some improvements to the existing GEW8 implementation.

Here's what the MU5 demo sounds like now:
https://revenant1.net/mu5_test.ogg

Still has some issues compared to the real device (e.g. the synth strings around 0:24 are totally missing) but it's still a pretty clear improvement. Once I'm finished with all this GEW7 stuff I may focus on being able to get this promoted next.

That's much improved on the MU-5! And I completely feel the "god dammit yamaha" you posted on Twitter, although it's definitely not unknown for some chips to manage to read on lines where the DDR is set to output.

There tend to be three possibililties there:
- h8 mode, some directions for some bits are fixed, and the ddr register just does not implement the corresponding bits which are ignored
- 6522 mode, some ports are open-collector, e.g. the pin drives to 0 but it just a pull-up for 1. Allows to do easy bidirectional for things like i2c and its ancestors
- crap mode, the external device drives the pins harder than the i/o device

In way less exciting news then the Namco System 10 progress in the Shout Box or recent developments in this thread, games in funworld/supercrd.cpp start to run enough to show something: