Spock and Bermuda
SCSI w/cache - Latest  
Bermuda Planar  

F2 Transorb
CR1 Diode

J300 External C60 Port
J? 50 pin internal SCSI

T-Res SCSI terminator

U32 80C188 16 MHz
U44 SRM20256LM12

U47 BIOS 61G2976

U68 SCSI BIOS Even
U69 SCSI BIOS Odd

U33 84F8324 Line Interface
U79 33F6715 SCSI Controller
U70 15F6903 Memory Controller

U87,88 30-pin SIMM socket

Y1 20.000 MHz osc
Y2 25.0000 MHz osc
Y3 32.0000 MHz osc


CR1 B54
R34 Transorb (TERMPWR)

J6 SCSI connector (mini-C60)
J7 Internal SCSI header (50-pin)

ST1, ST2 Resistor Networks

U12 N80C188-16 SCSI controller
U19 SRM20256LM-12 32Kx8 SRAM

U20 ST M27C512 (SCSI BIOS? 39G2066)

U24 TI 84F8324 SCSI Line Interface
U31 33F6715 SCSI controller
U32 15F6903 SCSI Memory controller

U23 HM514280ALJ8 256Kx18 DRAM

OS1 25.0000 MHz osc (SCSI)
OS2 32.0000 MHz osc (SCSI 80C188)
OS7 40.0000 MHz osc (divided by 2?)
Functions of Late Adapter Oscillators (from Peter)
20 MHz oscillator is for the SCSI-Line interface processor.
25 MHz drives the cache controller.
32 MHz for 80C186-16 microcontroller, which supplies busmaster functions.