CMS ENHANCEMENTS, INC.
UNIVERSAL AT/XT CONTROLLER
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Data bus: |
16-bit ISA |
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Size: |
Half length, full-height card |
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Hard drive supported: |
Two IDE(AT) interface drives |
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Floppy drives supported: |
None |
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CONNECTIONS | |
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Function |
Location |
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40-pin IDE(AT) interface connector |
J3 |
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External power connector |
J4 |
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Replaceable controller chip |
U2 |
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Note: Chip U2 can be replaced with a U2 A/X-30 chip for compatibility with some PS-2 model 30 systems. | |
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USER CONFIGURABLE SETTING | |||
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Function |
Location |
Setting | |
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Factory configured - do not alter |
SW1/1 |
N/A | |
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Factory configured - do not alter |
SW1/2 |
N/A | |
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Controller enabled |
SW1/3 |
on | |
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Controller disabled |
SW1/3 |
off | |
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CMS drive C select |
SW1/4 |
on | |
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CMS drive D select |
SW1/4 |
off | |
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I/O address select 1F0 - 1F7h |
SW1/7 |
on | |
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I/O address select 170 - 177h |
SW1/7 |
off | |
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BASE MEMORY ADDRESS SELECT | |||
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Address |
SW1/5 |
SW1/6 | |
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C8000h |
off |
off | |
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D8000h |
off |
on | |
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CC000h |
on |
off | |
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DC000h |
on |
on | |
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XT COMPATIBLE INTERRUPT CONFIGURATION | ||
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IRQ |
SW1/8 | |
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IRQ5 |
on | |
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IRQ2 |
off | |
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AT COMPATIBLE INTERRUPT CONFIGURATION | ||
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IRQ |
SW1/8 | |
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IRQ14 |
on | |
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IRQ11 |
off | |