CMS ENHANCEMENTS, INC.
HCWDWX1
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Data bus: |
8-bit ISA |
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Size: |
Half-length, full-height card |
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Hard drive supported: |
Two MFM ST506/412 drives |
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Floppy drives supported: |
None |
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CONNECTIONS | |
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Function |
Location |
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34-pin control cable connector - hard drive |
J1 |
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20-pin data cable connector - drive 0 |
J2 |
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20-pin data cable connector - drive 1 |
J3 |
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External power connector |
J4 |
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USER CONFIGURABLE SETTINGS | |||
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Function |
Location |
Setting | |
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Factory configured - do not alter |
J1/A |
N/A | |
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Factory configured - do not alter |
J1/B |
N/A | |
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Factory configured - do not alter |
J1/D |
N/A | |
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Controller supports up to 16 heads |
W6 |
pins 1 & 2 closed | |
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Controller supports up to 8 heads |
W6 |
pins 2 & 3 closed | |
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ADDRESS SELECT | |||||
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I/O Address |
Base Memory Address |
W3 |
W4 |
W8 | |
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320 - 323h |
C8000 - C9FFFh |
closed |
pins 2 & 3 |
pins 2 & 3 | |
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324 - 327h |
CA000 - CBFFFh |
closed |
pins 1 & 2 |
pins 1 & 2 | |
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N/A |
Disabled |
open |
N/A |
N/A | |
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Note: All pins designated should be placed in the closed position. | |||||
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PRE-SELECTED DRIVE CONFIGURATIONS | |||||||
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First Drive |
Second Drive | ||||||
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Capacity |
Heads |
Cylinders |
J1/E |
J1/F |
J1/G |
J1/H | |
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10MB |
4 |
306 |
open |
open |
open |
open | |
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21MB |
4 |
612 |
closed |
closed |
closed |
closed | |
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10MB |
2 |
612 |
open |
closed |
open |
closed | |
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21MB |
4 |
612 |
closed |
open |
closed |
open | |
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INTERRUPT SELECT | |||
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IRQ |
W7 |
J1/C | |
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IRQ5 |
pins 1 & 2 closed |
open | |
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IRQ2 |
pins 2 & 3 closed |
closed | |
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Note: The location of jumper W7 is not identified in manufacturer documentation. | |||