SCIENTIFIC MICRO SYSTEMS OMTI 5510, OMTI 6510 Data bus: 8-bit, ISA/AT Size: Half-length, full-height card Hard drives supported: OMTI 5510: Two MFM ST506/412 drives OMTI 6510: Two RLL ESDI drives Floppy drives supported: None Maximum Hds/Cyls: 16 heads and 2048 Interleave 1:1 [Image] Note: Pin 1 on cable connectors is shown for the 5510. For the 6510, pin orientation is opposite, with pin 1 located in the upper left corner. CONNECTIONS Function Location 34-pin control cable connector-hard drive J2 20-pin data cable connector-drive 0 J3 20-pin data cable connector-drive 1 J4 USER CONFIGURABLE SETTINGS Function Location Setting » BIOS enabled W7 open BIOS disabled W7 closed » BIOS address is C8000h W8 open BIOS address is CA000h W8 closed » Drive 0 soft sectored (5510 W11 open only) Drive 0 hard sectored (5510 W11 closed only) » Drive 1 soft sectored (5510 W14 open only) Drive 1 hard sectored (5510 W14 closed only) I/O PORT ADDRESS Address Jumper W5 Jumper W6 » 320h open open 324h closed open 328h open closed 32Ch closed closed SECTOR CONFIGURATION JUMPERS Bytes per Sector SPT Jumper W9 Jumper W10 512 18 open open 256 32 closed open » 512 17 open closed 1024 9 closed closed DRIVE CONFIGURATION Drive Drive 0 Drive 1 Type Jumper W12 Jumper W13 Jumper Jumper W15 W16 » Fixed open open open open Reserved closed open closed open Reserved open closed open closed Removable closed closed closed closed DRIVE TYPE CONFIGURATION DRIVE 1 DRIVE 0 BIOS #1002411 Jumepr W1 Jumper Jumper W3 Jumper Cyl. Hds. Precomp W2 W4 closed closed closed closed 2 612 400 open closed open closed 2 612 128 closed open closed open 6 306 128 open open open open 4 306 128 DRIVE CONFIGURATION JUMPERS - BIOS #1002450, #-2451, -#-2302 & #-2570, W1 W2 W3 W4 HDS CYLS WPC closed closed closed closed 15 918 none closed closed closed open 4 640 256 closed closed open closed 5 645 320 closed closed open open 4 512 256 closed open closed closed 7 987 none closed open closed open 2 612 400 closed open open closed 7 634 320 closed open open open 6 306 128 open closed closed closed 11 918 none open closed closed open 8 512 256 open closed open closed 11 754 none open closed open open 4 612 256 open open closed closed 5 697 256 open open closed open 2 612 128 open open open closed 6 640 256 open open open open 4 306 128 DRIVE CONFIGURATION JUMPERS - BIOS #1002452 W1 W2 W3 W4 HDS. CYLS. WPC closed closed closed closed 3 1024 512 open closed closed closed 5 1024 512 closed closed open closed 7 1024 512 open closed open closed 8 1024 512 closed open closed closed 2 612 128 open open closed closed 4 612 128 closed open open closed 2 615 128 open open open closed 4 615 128 closed closed closed open 4 512 256 open closed closed open 6 512 256 closed closed open open 8 512 256 open closed open open 3 697 128 open open closed open 9 925 128 closed open closed open 5 697 128 closed open open open 6 306 128 open open open open 4 306 128 DRIVE CONFIGURATION JUMPERS - BIOS #1002571 W1 W2 W3 W4 HDS. CYLS. WPC closed closed closed closed 8 1024 none open closed closed closed 4 612 none closed open closed closed 6 615 none open open closed closed 4 616 none closed closed open closed 7 987 none open closed open closed 7 1166 none closed open open closed 11 1224 none open open open closed 15 1224 none closed closed closed open 4 820 none open closed closed open 6 820 none closed open closed open 5 1024 none open open closed open 9 1024 none closed closed open open 5 830 none open closed open open 7 830 none closed open open open 10 830 none open open open open 4 615 none DRIVE CONFIGURATION JUMPERS - BIOS #1002312 W1 W2 W3 W4 Hds. Cyls. Step (RWC) Rate open open open open 4 615 25 m sec open open open closed 5 987 10 m sec open open closed open 4 612 25 m sec open open closed closed 8 640 25 m sec open closed open open 4 306 25 m sec (128) open closed open closed 8 612 25 m sec open closed closed open 10 830 10 m sec open closed closed closed 6 640 25 m sec closed open open open 4 306 25 m sec closed open open closed 7 830 10 m sec closed open closed open 4 612 25 m sec (128) closed open closed closed 15 918 10 m sec closed closed open open 2 615 25 m sec closed closed open closed 5 980 25 m sec (700) closed closed closed open 8 1024 10 m sec closed closed closed closed 4 640 25 m sec MISCELLANEOUS TECHNICAL NOTES W1 through W4 are used to configure the drive type. To support most of the drives on the market, there have been several different BIOS's offered. The different BIOS drive type tables are listed above with the proper jumper settings.