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? Adaptec, Incorporated AHA-1540B/42B ?
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? LED FLOPPY HARD DRIVE F1 ?
? ?????????????????????????????????????? ?
? Floppy (34 pins) ?.... 1::::::: 1::::::::::::: ?? ????? ?
? INT.HD.(50 pins) ? ??2?? ??3???? ????? ?
? EXT.HD.(50 pins) ? ??5?? ?? ? ? ? ?
? ? J5 1:::::::::::: 1: ? ? ?EXT. ?
? ??2?? SCSI BUS ? J6 1:::: :: ? ? ?SCSI ?
? Term. Resistors ? ??????? ???????? :: ? ? ? ?
? ? ?uCODE? J8 1:::::: ? BIOS ? J7 ? ? ? ?
? F1: 1.5A, 125V ? ??????? J9 1:::::::: ???????? ????? ?
? Term. Power Fuse ????????????? ?? ????? ?
? ??????????????????????? ? ?
? ?
? INTERFACE: ISA(AT)->SCSI-2 ?
? CONTROLS: 2 Floppy Drives (1542B only)(360KB, 720KB, 1.2MB, 1.44MB)?
? 7 SCSI Devices ?
? ?
? J5: General Control ?
? J5-1: Synchronous Negotiation Enable: *Disabled: (no Jumper) ?
? Enabled: J5-1 Jumpered ?
? ?
? J5-2: Diagnostics (Factory use ONLY): *Disabled: (no jumper) ?
? ?
? J5-3: SCSI Parity Bit: *Enable Parity: (no jumper) ?
? Disable Parity: J5-3 Jumpered ?
? ?
? J5-4,5,6: SCSI Address: 0 1 2 3 4 5 6 7 (7 is Default) ?
? 4 x - x - x - x - ?
? 5 x x - - x x - - (x = Jumpered) ?
? 6 x x x x - - - - ?
? ?
? J5-7,8: DMA Channel: 0 5 6 7 (5 is Default) ?
? 7 x - x - ?
? 8 x x - - ?
? ?
? J5-9,10,11: Interrupt Chan.: 9 10 11 12 14 15 (11 is Default) ?
? 9 - x - x - x ?
? 10 - - x x - - ?
? 11 - - - - x x ?
? ?
? J5-12,13: DMA Transfer Speed: 5.0 5.7 6.7 8.0 (5.7 is ?
? 12 - x - x Default) ?
? 13 - - x x ?
? ?
? J6: BIOS/Auto Sense Control: 1 x 1: BIOS Enable ?
? 2 - 2,3,4: Not Used ?
? 3 - 5: Auto Sense disable ?
? 4 - ?
? 5 - (1 is Default) ?
? ?
? ?
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? AHA-1540B,1542B Page 2 ?
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? ?
? J7: Address Selection ?
? ?
? J7-1: Floppy Secondary Address (Default is not jumpered) ?
? ?
? J7-2,3,4: AT I/O Port Addr.: 334 330 230 134 130 ?
? 2 - x - x - (Default ?
? 3 - - x x - is 330h) ?
? 4 - - - x x ?
? ?
? J7-5,6: BIOS Wait State (ns): 0 100 200 300 ?
? 5 - x - x (Default ?
? 6 - - x x is 0) ?
? ?
? J7-7,8: BIOS Address: DC000 CC000 D8000 C8000 ?
? 7 - x - x (Default ?
? 8 - - x x is DC000) ?
? ?
? J8: Floppy Disk Selection: 1: Floppy Enable (on Enabled ) ?
? 2,3: DMA REQ. (2 or 3) (2 DMA REQ.2) ?
? (1542B only) 4,5: DMA ACK. (2 or 3) (4 DMA ACK.2) ?
? 6,7: INT.REQ. (6 or 10) (6 INT.REQ.6) ?
? 8: Dual Speed Enable (off Disabled) ?
? ?
? J9: DMA/Interrupt: 1,2,3,4: DMA REQ. (0,5,6,7) (2 DMA REQ.5) ?
? 5,6,7,8: DMA ACK. (0,5,6,7) (6 DMA ACK.5) ?
? 9,10,11,12,13,14: INT.REQ. (9,10,11, ?
? 12,14,15) (11 INT.REQ.11) ?
? ?
???????????????????????????? Additional Info ????????????????????????????
? ?
? This Host Adapter may also be ordered with a high-density SCSI-2 ?
? external connector, as part no: 1540B100 or 1542B100. ?
? ?
? SCSI bus terminators MUST be located at each end of the SCSI bus. ?
? If using internal SCSI peripherals only, the terminators on the H.A. ?
? must remain in place, and the device at the farthest point must also ?
? have it's terminators in place. All devices between must have their ?
? terminators removed. If using internal AND external peripherals, ?
? the devices at the end of the internal, and external cables should ?
? retain their terminators, and all those between, including the Host ?
? Adapter, should have theirs removed. ?
? ?
? Adaptec has added support for drives larger than 1GB with their ?
? 3.20 BIOS and uCODE. When correctly set up, the host adapter will ?
? automatically select the correct translation for the drive. The ?
? translation for drives over 1GB increases the heads. ?
? ?
? The 154x series is a Bus Mastering Host Adapter, and is well-suited ?
? for multi-tasking Operating Systems, such as UNIX and OS/2. ?
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