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# SILICON VALLEY COMPUTER, INC.
ADP20F
+------------------------------------------------------------+
|------------------------------------------------------------|
| Data bus: | 16-bit, ISA |
|-------------------+----------------------------------------|
| Size: | Half-length, full-height card |
|-------------------+----------------------------------------|
| Hard drive | Two IDE (AT) Interface drives |
| supported: | |
|-------------------+----------------------------------------|
| Floppy drives | Two 360KB, 720KB, 1.2MB, or 1.44MB |
| supported: | drives |
+------------------------------------------------------------+
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|---------------------------------------------+--------------|
| 34-pin control cable connector-floppy drive | P1 |
|---------------------------------------------+--------------|
| 40-pin AT Interface (IDE) connector | P2 |
|---------------------------------------------+--------------|
| 4-pin connector-Drive active LED | P6 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|-------------------------------------+------------+---------|
| » | Floppy drive enabled | E1, E6, E7 | closed |
|---+---------------------------------+------------+---------|
| | Floppy drive disabled | E1, E6, E7 | open |
|---+---------------------------------+------------+---------|
| » | Floppy drive change signal | E2 | closed |
| | enabled | | |
|---+---------------------------------+------------+---------|
| | Floppy drive change signal | E2 | open |
| | disabled | | |
|---+---------------------------------+------------+---------|
| » | Floppy drive precompensation is | E3 | open |
| | 125ns | | |
|---+---------------------------------+------------+---------|
| | Floppy drive precompensation is | E3 | closed |
| | 187ns | | |
|---+---------------------------------+------------+---------|
| » | Single speed floppy drives | E4 | open |
| | supported | | |
|---+---------------------------------+------------+---------|
| | Dual speed floppy drives | E4 | closed |
| | supported | | |
|---+---------------------------------+------------+---------|
| » | Older Conner hard drives not | E5 | open |
| | supported | | |
|---+---------------------------------+------------+---------|
| | Older Conner hard drives | E5 | closed |
| | supported | | |
+------------------------------------------------------------+