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The ROMs of a "Weather Star 4000" have been dumped, it seems: https://twitter.com/agirisan/status/1276670826058743808

There's been a skeleton in MAME since around Christmas.

Hi,

I've dumped the system ROMs for the EACA Video Genie System EG3003, an almost-clone of the TRS-80 model 1. I have uploaded them to the Internet Archive here: https://archive.org/details/EACAVideoGenieEG3003. I noticed that this machine was on the MESS "Dumps Needed" page, so I thought I'd post here to let you know.

The dumps are three 4KB files, corresponding to the 9332B ROM chips labelled 3001, 3002, and 3003 on the CPU board.

These were dumped from the first version of the EG3003 (before the addition of the VU-meter and enhanced keyboard). I think the second version (with VU-meter and full keyboard, but before the addition of lower case characters as standard) had the same ROMs, but cannot personally confirm this.

The differences from the TRS-80 model 1 ROM seem to be exactly as described at https://www.classic-computers.org.nz/system-80/hardware_rom.htm. This would imply that the first version of the Dick Smith System 80 Mk. I had the same ROMs as the first version of the Video Genie EG3003 (which makes sense if Dick Smith Electronics was just rebadging the various Genie models for sale in Australia).

Thanks Rayner! That's not too surprising - most Dick Smith machines were rebadges of Asian clones from what I've been able to tell.

The recent improvements of the HP Jornada driver reminded me I have a Jornada 820 here ... no idea how to dump the ROM though. If there's a non-invasive way, I'm all for it.

In 2011 Micko asked for a hex dump of the monitor program of the IMSAI 8048 Control Computer https://www.classic-computers.org.nz/forums/viewtopic.php?f=11&t=457.
One of the original participants of that thread, GePu, just posted on the German VzEkC forum and was willing to share the hex file. I've uploaded it to the FTP.

Here are a couple of devices I dumped ROMs from over the last few months.

First, the EPROM from a Xetec C-5181 printer adapter for C64: https://revenant1.net/xetec_c5181.bin

Based on these photos, I identified it as originally being used for the "Big Blue" thermal printer, which as far as I can tell is compatible with Epson 9-pin serial printers. The adapter itself runs on a CDP6805E2E, with port A connected to both the C64 serial bus and the printer.

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Second, the mask ROM from a Casio CTK-551 keyboard: https://revenant1.net/ctk551.bin

This one uses the same main board and I/O board as the CTK-531 and CTK-541. The only difference is that each higher-numbered model has more inputs hooked up (velocity-sensitive keys on the 541/551, and pitch wheel on the 551). There are scans of the CTK-541 service manual w/ pinouts and schematics floating around online.

These all run on a "Casio GT913F", which I can only assume is related to the NEC µPD912 and µPD914 chips found in other CTK models. I haven't been able to find out anything about the actual architecture, though.

There's various (byte-swapped) ASCII text throughout the ROM, including for some test mode that I don't know how to access. The instrument samples start at 0x5A800 (or thereabouts); the samples don't seem to be straight-up PCM, but you can listen to them as such and still get pretty recognizable sounds.

The Sega SVP chip has been dumped: https://forums.sonicretro.org/index.php?posts/978722/

The security chip in the PS2 has been dumped, too: https://twitter.com/CTurtE/status/1365734369302822920

can you add both of these to the MAME drivers, even if not used?