DISTRIBUTED PROCESSING TECHNOLOGY PM2011/95 - EISA Card Type Hard drive controller Maximum Onboard Memory 16.5MB Hard Drives supported Up to 7 SCSI devices Floppy drives supported Two 360KB, 720KB, 1.2MB, or 1.44MB drives Data Bus EISA Card Size Full-length, full-height [Image] CONNECTIONS Function Location Function Location 50-pin SCSI CN1 Memory module CN7 connector - internal connector 34-pin cable CN2 Disk mirroring CN8 connector - floppy module connector drive 50-pin SCSI CN3 Disk mirroring CN9 connector - external module connector Cache module CN4 Memory expansion CN10 connector board cable connector Cache module CN5 Drive active LED CN11 connector Memory module CN6 connector Note:Exact size and orientation of CN4-CN11 is unidentified. USER CONFIGURABLE SETTINGS Function Label Position » Address lines LA17-19 and SA17-19 Y19 Closed are driven Only address lines LA17-19 are Y19 Open driven » Floppy drive interface enabled Y20 Open Floppy drive interface disabled Y20 Closed » EPROM size 256KB enabled Y23 Pins 2 & 3 closed EPROM size 512KB enabled Y23 Pins 1 & 2 closed » Bus mastering enabled Y24 Open Bus mastering disabled Y24 Closed » Bus master DMA speed 4MB/sec Y27 Closed enabled Bus master DMA speed 5MB/sec Y27 Open enabled » Floppy drive interface 3F0h Y34 Open address enabled Floppy drive interface 370h Y34 Closed address enabled » Factory configured - do not alter Y38 Unidentified SCSI ID SELECTION SCSI ID Y18 Y25 Y26 0 Closed Closed Closed 1 Closed Open Closed 2 Open Closed Closed 3 Open Open Closed 4 Closed Closed Open 5 Closed Open Open 6 Open Closed Open » 7 Open Open Open DMA CHANNEL SELECTION Channel Y31 Y32 0 Open Open » 5 Closed Closed 6 Closed Open 7 Open Closed BIOS ADDRESS SELECTION Address Y36 Y37 » C8000h Closed Closed D8000h Closed Open DC000h Open Closed Disabled Open Open BASE I/O ADDRESS SELECTION Address Y33 Y35 » 1F0h Closed Closed 170h Open Closed 230h Open Open 330h Closed Open INTERRUPT SELECTION IRQ Y29 Y30 IRQ12 Open Closed IRQ14 Closed Closed IRQ15 Closed Open Disabled Open Open MEMCS16 ISA BUS SIGNAL SELECTION Setting Y21 Y28 Ignore signal Open Closed Decode signal Closed Open DIAGNOSTIC LED(S) LED Color Status Condition 1 - 8 Unidentified Rotate in bit Controller in Idle state pattern Controller in Active state: 1 Unidentified On Busy 2 Unidentified On Computer bus transfer to controller 3 Unidentified On Computer bus transfer from controller 4 Unidentified On Cache hit 5 Unidentified On Disk read-ahead active 6 Unidentified On Disk read 7 Unidentified On Disk write 8 Unidentified On Controller reset 9 Unidentified On Controller interrupt pending to computer 10 Unidentified On DRQ asserted to computer 1 - 4, Unidentified Blinking Controller in Fatal Trap 5 - 8 together state (will not let alternately computer boot) Controller in power up state (3 stages): 1 - 10 Unidentified On (1) Display amount of cache in a binary pattern, with LED 1 as the least significant binary digit. 1, 2, Unidentified Blinking (2) Waiting period 5, 6 together alternately 2, 3, Unidentified Blinking (2) Waiting period 6, 7 together alternately 1, 3, Unidentified Blinking (3) Contact is being 5, 7 together established with SCSI alternately drives 2, 4, 6 Unidentified Blinking (3) Contact is being together established with SCSI alternately drives MISCELLANEOUS TECHNICAL NOTES The controller cannot use caching without the CM401X caching module. The MM401X memory modules cannot operate without the caching module. The memory modules come in 2MB and 4MB size but can only be installed one at the time unless the MX401X expansion card is connected to the controller. DM401X is the disk mirroring module which provide RAID 1 disk mirroring capability.