CHAINTECH COMPUTER COMPANY, LTD.
ML-757
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Data bus: |
32-bit VL-bus |
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Size: |
Three-quarter length, half-height card |
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Hard drive supported: |
Four IDE(AT) drives |
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Floppy drives supported: |
Two 360KB, 720KB, 1.2MB, or 1.44MB drives |
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CONNECTIONS | |
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Function |
Location |
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40-pin primary IDE(AT) connector |
J1 |
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40-pin secondary IDE(AT) connector |
J2 |
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34-pin cable connector - floppy drive |
J3 |
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10-pin serial port 1 internal, 9-pin serial port 1 - external |
J4 |
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10-pin serial port 2 - internal |
J5 |
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16-pin game port |
J6 |
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25-pin parallel port - external |
J7 |
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4-pin connector - drive active LED |
J8 |
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PARALLEL PORT ADDRESS SELECTION | |||
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LPT |
JP13 |
JP14 | |
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LPT1 (378h) |
pins 1 & 2 closed |
pins 1 & 2 closed | |
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LPT2 (278h) |
pins 2 & 3 closed |
pins 2 & 3 closed | |
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LPT3 (3BCh) |
pins 2 & 3 closed |
pins 1 & 2 closed | |
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Disabled |
pins 1 & 2 closed |
pins 2 & 3 closed | |
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USER CONFIGURABLE SETTINGS | |||
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Function |
Location |
Setting | |
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IDE(AT) interface enabled |
JP1/pins 1 & 2 |
closed | |
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IDE(AT) interface disabled |
JP1/pins 2 & 3 |
closed | |
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Primary & secondary IDE enabled |
JP2/pins 1 & 2 |
closed | |
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Primary IDE enabled, secondary disabled |
JP2/pins 2 & 3 |
closed | |
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CPU clock is 40 or 50MHz |
JP3/pins 1 & 2 |
closed | |
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CPU clock <=33MHz |
JP3/pins 2 & 3 |
closed | |
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Factory configured - do not alter |
JP4 |
N/A | |
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Factory configured - do not alter |
JP5 |
N/A | |
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Floppy drive order is normal (A:, B:) |
JP6/pins 1 & 2 |
closed | |
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Floppy drive order is reversed (B:, A:) |
JP6/pins 2 & 3 |
closed | |
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Floppy controller primary address is 3F0h |
JP7/pins 1 & 2 |
closed | |
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Floppy controller secondary address is 370h |
JP7/pins 2 & 3 |
closed | |
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Floppy drive interface enabled |
JP8/pins 1 & 2 |
closed | |
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Floppy drive interface disabled |
JP8/pins 2 & 3 |
closed | |
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Parallel port is unidirectional |
JP15 |
closed | |
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Parallel port is bi-directional |
JP15 |
open | |
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Parallel port IRQ 7 select |
JP16/ 1 |
closed | |
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Parallel port IRQ 5 select |
JP16/ 2 |
closed | |
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Game port enabled |
JP17 |
closed | |
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Game port disabled |
JP17 |
open | |
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SERIAL PORT 1 ADDRESS SELECTION | |||
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COM |
JP9 |
JP10 | |
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COM1 (3F8h) |
pins 1 & 2 closed |
pins 1 & 2 closed | |
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COM3 (3E8h) |
pins 2 & 3 closed |
pins 2 & 3 closed | |
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Disabled |
pins 2 & 3 closed |
pins 1 & 2 closed | |
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SERIAL PORT 2 ADDRESS SELECTION | |||
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COM |
JP11 |
JP12 | |
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COM2 (2F8h) |
pins 1 & 2 closed |
pins 1 & 2 closed | |
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COM4 (2E8h) |
pins 2 & 3 closed |
pins 2 & 3 closed | |
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Disabled |
pins 2 & 3 closed |
pins 1 & 2 closed | |
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MISCELLANEOUS TECHNICAL NOTES |
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Pin 1 in jumper blocks is unidentified. |