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DISTRIBUTED PROCESSING TECHNOLOGY

PM2024, PM2024-MAC

Data bus: 32-bit PCI
Size: Three-quarter length, full-height card
Hard drive supported: Up to seven Fast SCSI-2 devices
Floppy drives supported: None


CM4000 Caching Module

CONNECTIONS (CM4000 CACHING MODULE)
Function Location
Fault LED (red) DS1
ECC enabled LED (green) DS2
Proprietary CM4000 connector - caching board to controller J1
Proprietary CM4000 connector - caching board to controller J2
50-pin SCSI connector - external J11
Note: Proprietary connectors J1 and J2 are on the reverse side of the board.

 
CONNECTIONS (CONTROLLER)
Function Location
Proprietary CM4000 connector - controller to caching board P1
Proprietary CM4000 connector - controller to caching board P2
3-pin connector - factory test LED P4
4-pin connector - drive active LED P6
Proprietary DM4000 (disk array module) connector P5
Proprietary DM4000 (disk array module) connector P7
50-pin SCSI connector - internal P10
LED - adapter busy LED1
LED - computer bus transfer to adapter LED2
LED - computer bus transfer from adapter LED3
LED - cache hit LED4
LED - disk read/ahead active LED5
LED - disk read LED6
LED - disk write LED7
LED - adapter reset LED8
LED - interrupt to computer pending LED9
LED - DRQ to computer asserted LED10

 
CACHING MODULE DRAM CONFIGURATION
Size Bank 0 Bank 1 Bank 2 Bank 3
1MB (1) 256K × 36 None None None
1MB None (1) 256K × 36 None None
1MB None None (1) 256K × 36 None
1MB None None None (1) 256K × 36
2MB (1) 256K × 36 (1) 256K × 36 None None
2MB None (1) 256K × 36 (1) 256K × 36 None
2MB None None (1) 256K × 36 (1) 256K × 36
3MB (1) 256K × 36 (1) 256K × 36 (1) 256K × 36 None
3MB None (1) 256K × 36 (1) 256K × 36 (1) 256K × 36
3MB (1) 256K × 36 None (1) 256K × 36 (1) 256K × 36
3MB (1) 256K × 36 (1) 256K × 36 None (1) 256K × 36
4MB (1) 256K × 36 (1) 256K × 36 (1) 256K × 36 (1) 256K × 36
4MB (1) 1M × 36 None None None
4MB None (1) 1M × 36 None None
4MB None None (1) 1M × 36 None
4MB None None None (1) 1M × 36
8MB (1) 1M × 36 (1) 1M × 36 None None
8MB None (1) 1M × 36 (1) 1M × 36 None
8MB None None (1) 1M × 36 (1) 1M × 36
12MB (1) 1M × 36 (1) 1M × 36 (1) 1M × 36 None
12MB None (1) 1M × 36 (1) 1M × 36 (1) 1M × 36
12MB (1) 1M × 36 None (1) 1M × 36 (1) 1M × 36
12MB (1) 1M × 36 (1) 1M × 36 None (1) 1M × 36
16MB (1) 1M × 36 (1) 1M × 36 (1) 1M × 36 (1) 1M × 36
16MB (1) 4M × 36 None None None
16MB None (1) 4M × 36 None None
16MB None None (1) 4M × 36 None
16MB None None None (1) 4M × 36
32MB (1) 4M × 36 (1) 4M × 36 None None
32MB None (1) 4M × 36 (1) 4M × 36 None
32MB None None (1) 4M × 36 (1) 4M × 36
48MB (1) 4M × 36 (1) 4M × 36 (1) 4M × 36 None
48MB None (1) 4M × 36 (1) 4M × 36 (1) 4M × 36
48MB (1) 4M × 36 None (1) 4M × 36 (1) 4M × 36
48MB (1) 4M × 36 (1) 4M × 36 None (1) 4M × 36
64MB (1) 4M × 36 (1) 4M × 36 (1) 4M × 36 (1) 4M × 36
Notes: Although not shown above, 1MB, 4MB and 16MB SIMMs can be combined and DPT ECC SIMMs can replace parity SIMMs of 4MB or 16MB. Single sided SIMMs are preferred, but low-profile double sided 2MB and 8MB increments are supported.

 
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