Symbolics "MacIvory": PCB Photographs.
This post concerns the "MacIvory" Model 3 Lisp Machine. It is of interest strictly to bolixologists.
Click on a photo to see detailed version.
Machine chassis:
The Ivory NuBus Board Set (i.e. the LispM itself, the Mac Quadra is otherwise ordinary):
"Ivory" NuBus board, component-side:
What's under the labels?
| Bolix Label | Part | Notes |
|---|---|---|
| 115999-B | PLUS20L8 | PAL, 14 inputs, 8 outputs, no registers |
| 116000-B | PAL22V10-10P | PAL, 12 inputs, 10 macrocells, can have registers |
| 116001-B | PAL22V10-10P | PAL, 12 inputs, 10 macrocells, can have registers |
| 116004-A | GAL16V8 | GAL, can have registers |
| 116007-A | PAL16R8-7PC | PAL, 8 inputs, 8 registers |
| 116011-A | GAL16V8 | GAL, can have registers |
| S/N 30328 | CY7C261-55PC | 8K x 8 PROM, probably unit serial number |
| SHF-ARR4.1/116025 | Actel A1010A-1 | Antifuse-programmed CPLD, 1200 gates (equiv. of 12 period PALs) |
What are the vertical DIP ICs???
qs74fct373z Bus Interface 8-Bit Latch
8-Bit Bus Interface Register Transceiver
Multilevel Pipeline Register (equiv. of Am29520)
d424400v-70 1M-Word by 4-bit FPM DRAM
"Ivory" NuBus board, bottom-side:
"Ivory" RAM daughterboard, component-side:
What are the vertical DIP ICs???
d424400v-80 1M-Word by 4-bit FPM DRAM
"Ivory" RAM daughterboard, bottom-side:
Original 2400dpi scans of the boards (pre-photostitching) are available here:
1, 2, 3, 4, 5, 6 (WARNING: 200-300MB each!)
~To Be Continued~
The best pictures of these boards on the net to date. Eagerly awaiting the ivory die shots.
Dear Alex,
The die shot is unfortunately a destructive process. However, last year I obtained two Ivory CPUs (boardless, but of same type as sitting in this MacIvory) for this purpose.
Unfortunately the die shot still awaits the finding of a competent electron microscopist interested in doing the work "pro bono" -- as currently I cannot spare the $20-30K U.S. required to get the thing imaged at ordinary commercial shops.
Yours,
-S