DATA TECHNOLOGY CORPORATION
DTC3280A, DTC3280AS (400480-89XX)
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Data bus:
16-bit, ISA.Size:
Half-length, full-height card.Hard drives supported:
Up to seven SCSI devicesFloppy drives supported:
DTC3180A: NoneDTC3280A: Four 360KB, 720KB, 1.2MB or 1.44 MB drives
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CONNECTIONS | |
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Function |
Location |
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50-pin SCSI connector-external |
J1 |
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50-pin SCSI connector-internal |
J2 |
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34-pin data cable connector-floppy drive (DTC3280A and AS only) |
J3 |
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4-pin connector-drive active LED |
J4 |
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USER CONFIGURABLE SETTINGS | |||
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Function |
Location |
Setting | |
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Single-speed floppy supported |
SW1/switch 7 |
off | |
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Dual-speed floppy supported |
SW1/switch 7 |
on | |
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PS/2-type floppy on Drive Select 2 not supported |
SW1/switch 8 |
on | |
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PS/2-type floppy drive on Drive Select 2 supported |
SW1/switch 8 |
off | |
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Floppy drive precomp. is scaled by data rate: 500KHz=125ns, 300KHz=208ns, 250KHz=250ns |
SW1/switch 9 |
off | |
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Floppy drive precompensation is 125ns |
SW1/switch 9 |
on | |
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Floppy drive enabled |
SW1/switch 10 |
on | |
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Floppy drive disabled |
SW1/switch 10 |
off | |
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Factory configured - do not alter |
SW2/switch 3 |
off | |
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Factory configured - do not alter |
SW2/switch 4 |
off | |
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SCSI parity check enabled |
SW2/switch 5 |
off | |
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SCSI parity check disabled |
SW2/switch 5 |
on | |
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2KB SRAM selected |
W1 |
pins 2 & 3 closed | |
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8KB SRAM selected |
W1 |
pins 1 & 2 closed | |
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Floppy drive address 3F2-3F7h |
W2 |
pins 1 & 2 closed | |
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Floppy drive address 372-377h |
W2 |
pins 2 & 3 closed | |
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INQUIRY INTERRUPT REQUEST "B " OPTIONS | |||||
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IRQ |
SW1/switch 1 |
SW1/switch 2 |
SW1/switch 3 |
SW1/switch 4 | |
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IRQ11 |
off |
off |
on |
off | |
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IRQ10 |
off |
off |
off |
on | |
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IRQ12 |
off |
on |
off |
off | |
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IRQ15 |
on |
off |
off |
off | |
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Disabled |
off |
off |
off |
off | |
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BIOS ADDRESS | |||
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Address |
SW1/switch 5 |
SW1/switch 6 | |
|
D800h |
off |
off | |
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C800h |
off |
on | |
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DC00h |
on |
off | |
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CC00h |
on |
on | |
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INTERRUPT REQUEST | |||
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IRQ |
SW2/switch 1 |
SW2/switch 2 | |
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IRQ11 |
off |
on | |
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IRQ12 |
on |
off | |
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IRQ10 |
on |
on | |
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IRQ15 |
off |
off | |
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SCSI ADDRESS | ||||
|
SCSI ID |
SW2/switch 6 |
SW2/switch 7 |
SW2/switch 8 | |
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0 |
on |
on |
on | |
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1 |
off |
on |
on | |
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2 |
on |
off |
on | |
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3 |
off |
off |
on | |
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4 |
on |
on |
off | |
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5 |
off |
on |
off | |
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6 |
on |
off |
off | |
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7 |
off |
off |
off | |