Inside a Kawai R100 & the Drumware Inc. Soundswitcher

Some pics in via GrantB of the Music Technologies Group Blog.  Click here or here for what an R100 looks like on the outside.   There have only been two previous posts on the Kawai R100 Drum Machine and only two on Drumware, one featuring an Oberheim DX Drum Machine, and one a Sequential Circuits Drumtraks.

"Here are some photos of the ROM switcher board in my Kawai R-100 Drum machine. The expansion board is dated 1987. My unit contains three 4Mbit mask ROMs:

MN234000KAA, MN234000KAB, MN234000KAC

I think these ROMs are the original R100 and R50 and the R50e judging by what I’ve read elsewhere on the web. The sound format is 12-bit (non-linear) with a 32kHz sample rate."

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Oberheim DX Drum Machine

via this auction
"Oberheim DX in excellent condition. It was purchased used in 1987 from Scanlan Music in Detroit...

This auction includes the following items:

#1 Oberheim DX drum machine serial number 054237

With the following chips installed:
#1a Bass Chip = ELECT BASS, BASS or P1
#1b Snare Chip = GATED SNR DX
#1c Hi Hat Chip = DX Hi Hat 1A
#1d Tom Toms Chip = ELECT TOM, TOM or P2
#1e Perc Chips = TAMBOURINE RIMSHOT
#2 Original Manual
#3 Power Cord
#4 Extra Chip = SX SNARE 64
#5 Extra Chip = DX SHAKE 2
#6 Extra Chip = DX KICK 64
#7 Extra Chip = HI HAT B 64 1985 Drumware
#8 Extra Chip = DX TOM


More pictures and a video demonstration:
Photo album at me.com Wood trim is in excellent condition.
It has MIDI connections."

inside a DX

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Sequential Circuits DrumTraks Chips

via this auction

"Two different manufacturers for a total of 9 chips

Digidrums - Conga, Conga Slap/Agogo Bell, Talking Drum

Drumware - Sogo, Hi Room Tom, Hi Hat B, Hi Tabla

Unknown - Timbale and a mystery chip missing a label"