PROMISE TECHNOLOGY, INC.
DC420
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Data bus: |
32-bit, VL-bus |
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Size: |
Three/quarter-length, full-height card |
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Hard drive supported: |
Two IDE (AT) interface drives |
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Floppy drives supported: |
Two 360KB, 720KB, 1.2MB or 1.44MB drives |
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CONNECTIONS | |
|
Function |
Location |
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25-pin parallel port - external |
CN1 |
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9-pin serial port 1 - external |
CN2 |
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10-pin serial port 2 - internal |
CN3 |
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34-pin control cable connector - floppy drive |
J1 |
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40-pin IDE (AT) Interface connector |
J3 |
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4-pin connector - drive active LED |
JP3 |
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USER CONFIGURABLE SETTINGS | |||
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Function |
Location |
Setting | |
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Main board supports VL-bus ID3 (speed < 50MHz) |
JP1 |
pins 1 & 2 closed | |
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Main board does not support VL-bus ID3 (speed > 50MHz) |
JP1 |
pins 2 & 3 closed | |
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Factory configured - do not alter |
JP2 |
pins 1 & 2 closed | |
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Floppy drive enabled |
JP4/G |
pins 1 & 2 closed | |
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Floppy drive disabled |
JP4/G |
pins 2 & 3 closed | |
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SERIAL PORT 1 (CN2) CONFIGURATION | |||
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COM/Address/IRQ |
JP4/A |
JP4/B | |
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COM1/3F8h/IRQ4 |
pins 1 & 2 closed |
pins 2 & 3 closed | |
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COM3/3E8h/IRQ4 |
pins 2 & 3 closed |
pins 1 & 2 closed | |
|
Disabled |
pins 2 & 3 closed |
pins 2 & 3 closed | |
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SERIAL PORT 2 (CN3) CONFIGURATION | |||
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COM/Address/IRQ |
JP4/C |
JP4/D | |
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COM2/2F8h/IRQ3 |
pins 1 & 2 closed |
pins 2 & 3 closed | |
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COM4/2E8h/IRQ3 |
pins 2 & 3 closed |
pins 1 & 2 closed | |
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Disabled |
pins 2 & 3 closed |
pins 2 & 3 closed | |
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PARALLEL PORT (CN1) CONFIGURATION | ||||
|
Address/IRQ |
JP4/E |
JP4/F |
JP4/H | |
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378h/IRQ7 |
pin 1 & 2 closed |
pins 2 & 3 closed |
pins 2 & 3 closed | |
|
3BCh/IRQ7 |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 2 & 3 closed | |
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278h/IRQ5 |
pins 2 & 3 closed |
pins 1 & 2 closed |
pins 1 & 2 closed | |
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Disabled |
pins 2 & 3 closed |
pins 2 & 3 closed |
all pins open | |
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PARALLEL PORT BI-DIRECTIONAL FUNCTION | |
|
Setting |
JP5 |
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Bi-directional |
open |
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Uni-directional |
closed |
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MEMORY CONFIGURATION | |||
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Size |
Bank 0 |
Bank 1 | |
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512KB |
(1) 512K x 8 |
None | |
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1MB |
(1) 512K x 8 |
(4) 256K x 4 | |