UNIDENTIFIED
ML-863
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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: |
Two 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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25-pin parallel port - external |
CN1 |
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10-pin serial port 2 - internal |
CN2 |
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9-pin serial port 1 - external, 10-pin serial port 1 - internal |
CN3 |
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16-pin game port |
CN4 |
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34-pin cable connector - floppy drive |
CN5 |
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40-pin primary IDE(AT) connector |
CN6 |
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4-pin connector - drive active LED |
CN7 |
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USER CONFIGURABLE SETTINGS | |||
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Function |
Location |
Setting | |
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IOCHRDY signal disabled |
JP1 |
pins 1 & 2 closed | |
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IOCHRDY signal enabled |
JP1 |
pins 2 & 3 closed | |
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CPU speed is 40,50 MHz |
JP2 |
pins 1 & 2 closed | |
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CPU speed is <=33MHz |
JP2 |
pins 2 & 3 closed | |
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IDE(AT) interface enabled |
JP3 |
pins 1 & 2 closed | |
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IDE(AT) interface disabled |
JP3 |
pins 2 & 3 closed | |
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Floppy drive interface enabled |
JP4 |
pins 1 & 2 closed | |
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Floppy drive interface disabled |
JP4 |
pins 2 & 3 closed | |
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USER CONFIGURABLE SETTINGS (CONTINUED) | |||
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Function |
Location |
Setting | |
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Game port enabled |
JP5 |
pins 1 & 2 closed | |
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Game port disabled |
JP5 |
pins 2 & 3 closed | |
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Floppy drive select primary |
JP7 |
pins 1 & 2 closed | |
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Floppy drive select secondary |
JP7 |
pins 2 & 3 closed | |
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PARALLEL PORT ADDRESS SELECTION | |||
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LPT |
JP6 |
JP12 | |
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LPT2(378h) |
pins 1 & 2 closed |
pins 1 & 2 closed | |
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LPT3 (278h) |
pins 2 & 3 closed |
pins 1 & 2 closed | |
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Disabled |
N/A |
pins 2 & 3 closed | |
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SERIAL PORT 1 ADDRESS SELECTION | |||
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COM |
JP10 |
JP11 | |
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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 1 & 2 closed | |
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Disabled |
N/A |
pins 2 & 3 closed | |
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SERIAL PORT 2 ADDRESS SELECTION | |||
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COM |
JP8 |
JP9 | |
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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 1 & 2 closed | |
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Disabled |
N/A |
pins 2 & 3 closed | |
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IDE HARD DISK DRIVE SPEED SELECTION | |||
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Device Speed |
JP13 |
JP14 | |
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Low - 600ns |
pins 1 & 2 closed |
pins 1 & 2 closed | |
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Normal - 500ns |
pins 1 & 2 closed |
pins 2 & 3 closed | |
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Fast speed - 383ns |
pins 2 & 3 closed |
pins 1 & 2 closed | |
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Turbo speed - 240ns |
pins 2 & 3 closed |
pins 2 & 3 closed | |
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MISCELLANEOUS TECHNICAL NOTES |
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The location of pin 1 is unidentified on jumpers JP1-JP12. |