Previous Thread
Next Thread
Print Thread
Page 81 of 81 1 2 79 80 81
Darkstar #120372 01/16/22 11:35 AM
Joined: Apr 2005
Posts: 600
Likes: 2
Senior Member
OP Online Content
Senior Member
Joined: Apr 2005
Posts: 600
Likes: 2
I decided to dump the EPROMs on that beautiful DEC DMB32 communication controller:
[Linked Image from i.imgur.com]

Yes, I know, there's no VAX emulation in MAME (yet) but maybe at some point this will come in handy. Now I'll get this framed and hang it on a wall smile

The EPROM dumps and some higher-resolution photos can be downloaded here. I also included the two manuals for the DMB32 that are available on MANX, just in case.

1 member likes this: exidyboy
Darkstar #120391 01/21/22 11:06 PM
Joined: Jan 2021
Posts: 45
Likes: 28
R
Member
Offline
Member
R
Joined: Jan 2021
Posts: 45
Likes: 28
https://revenant1.net/casio/ld50.zip
ROM and 87c52 MCU dumps from the Casio LD-50 electronic drums. Also includes the demo and built-in rhythms as MIDI files, which is how they're stored in ROM.

This is clearly a rebranded/outsourced product, sort of like the LD-80 (also sold as the Medeli DD-306), but I can't tell if this one was ever sold under other brands or who the actual developer is. The ROM mentions "SharpWin", which might be this company, but I'm not entirely sure.

Anyway, the actual sound chip is a Dream SAM9793 MIDI-synth-on-a-chip (i.e. MIDI goes in, I2S comes out), which isn't a very viable emulation target. Alternately, you should just be able to connect the MCU's UART output to a generic MIDI out port and just have it control something else instead, if it'd be worth having a driver that does that.

1 member likes this: Robbbert
Darkstar #120392 01/22/22 06:03 AM
Joined: Jan 2021
Posts: 126
=
Senior Member
Offline
Senior Member
=
Joined: Jan 2021
Posts: 126
Casio rebranded also other music stuff?

I only know the awful Casio MA-150/MA-170 midsize keyboard that actually was a Medeli MC-36 (i.e. mainvoice of primitive static waveforms with noisy DAC output). Casio really did themselves no favour with ruining their reputation with selling this really poor sounding tablehooter. If I remeber well, even the play training modes were full of glitches and in some songs unusable because instead of the melody voice it did some rapid arpeggio stuff that is impossible by hand if you are not a pianist skilled like Lang Lang.


MAY THE SOFTWARE BE WITH YOU!

{weltenschule.de}
=CO=Windler #120755 04/13/22 10:08 PM
Joined: Jan 2021
Posts: 45
Likes: 28
R
Member
Offline
Member
R
Joined: Jan 2021
Posts: 45
Likes: 28
https://revenant1.net/casio/ct647.zip

Mask ROM dump from the Casio CT-647 / CT-648 (1992), also released as CTK-500 / CTK-510 and Concertmate 950

Service manual: https://revenant1.net/casio/manuals/msm6626/ctk500.pdf

The CPU/sound chip can be either MSM6566-03 or MSM6626-01 depending on revision (mine has the former, the service manual has the latter), but the PCBs are otherwise the same. I don't know of any other models that used these aside from possibly the KT-80 (similar keyboard with built-in CD player) and KT-90G (same but with CD+G). As usual with these custom OKI chips the program code is probably internal.

Last edited by Revenant; 04/13/22 10:17 PM.
Darkstar #121244 08/14/22 09:23 PM
Joined: Jan 2021
Posts: 45
Likes: 28
R
Member
Offline
Member
R
Joined: Jan 2021
Posts: 45
Likes: 28
https://revenant1.net/phusion.zip

VTech "Phusion" handheld organizer/PDA (2000).

Code
Version 1.73 12:00 20000426
VTECH ET39700

CPU is an epoxy blob (go figure). Code at the beginning of the ROM seems like CR16B, similar to the machines in vtech/glcx.cpp, though probably not the same exact SoC.

Page 81 of 81 1 2 79 80 81

Link Copied to Clipboard
Who's Online Now
2 members (AJR, R. Belmont), 57 guests, and 3 robots.
Key: Admin, Global Mod, Mod
ShoutChat
Comment Guidelines: Do post respectful and insightful comments. Don't flame, hate, spam.
Forum Statistics
Forums9
Topics9,129
Posts119,632
Members5,026
Most Online890
Jan 17th, 2020
Our Sponsor
These forums are sponsored by Superior Solitaire, an ad-free card game collection for macOS and iOS. Download it today!

Superior Solitaire
Forum hosted by www.retrogamesformac.com