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ULTRA15C
| Data bus: | 16-bit, PC/AT |
| Size: | Half-length, full-height card |
| Hard drives supported: | Two IDE (AT) Interface drives |
| Floppy drives supported: | Three 360KB, 720KB, 1.2MB, or 1.44MB |
| CONNECTIONS | |
|---|---|
| Function | Location |
| 34-pin control cable connector-floppy drive | J1 |
| 4-pin connector-drive active LED | J6 |
| 40-pin IDE (AT) Interface control cable connector | JP23 |
| USER CONFIGURABLE SETTINGS | ||
|---|---|---|
| Function | Location | Setting |
| Supports a third floppy on single twisted cable (DS4) | JP11/jumper 1 | closed |
| Supports a third floppy on double twisted cable (DS2) | JP11/jumper 1 | open |
 Hard drive port address is 1F0-1F7h |
JP11/jumper 2 | open |
| Hard drive port address is 170-177h | JP11/jumper 2 | closed |
| Floppy drive enabled |
JP11/jumper 3 | closed |
| Floppy drive disabled | JP11/jumper 3 | open |
| Floppy drive port address is 3F0-3F7h |
JP11/jumper 4 | open |
| Floppy drive port address is 370-377h | JP11/jumper 4 | closed |
| Single speed floppy drive supported |
JP11/jumper 5 | open |
| Dual speed floppy drive supported | JP11/jumper 5 | closed |
| Floppy drive precomp. is scaled by data rate: 500KHz=125ns, 300KHz=208ns, 250KHz=250ns |
JP11/jumper 6 | open |
| Floppy drive precomp. is 125ns | JP11/jumper 6 | closed |
| Chassis ground connection |
JP16 | open |
| Hard drive interrupt is IRQ14 |
JP21 | pins 2 & 3 closed |
| Hard drive interrupt is IRQ15 | JP21 | pins 1 & 2 closed |
| BIOS ADDRESS | |||
|---|---|---|---|
| Address | JP10/jumper 1 | JP10/jumper 2 | JP10/jumper 3 |
| Disabled | open | open | open |
| C800h |
open | open | closed |
| CC00h | open | closed | open |
| D000h | open | closed | closed |
| D400h | closed | open | open |
| D800h | closed | open | closed |
| DC00h | closed | closed | open |
| Disabled | closed | closed | closed |
| MISCELLANEOUS TECHNICAL NOTES |
|---|
| Both SIMM's must be of the same size (256K, 1MB, or 4MB) and must be rated
at 100ns or less. Reserved jumper settings are as follows: JP4/jumpers 1-4 are
reserved and must be left “open”. JP24 is reserved and must be left
“open”. JP27 is reserved and must remain as is. JP22 and JP26 are
factory reserved and the defaults are as follows: JP22/jumpers 1 & 2, 5 & 6, and 10 & 11 should be “open”, jumpers 3 & 4, 7 & 9 should be “closed.” JP26/jumpers 2 through `6 should be left “open”, jumpers 1, 7 through 9 should be left “closed” |
SCSI CONTROLLER XL-221
| Data bus: | 16-bit ISA |
| Size: | Half-length, half-height card |
| Hard drive supported: | Up to fourteen SCSI devices |
| Floppy drives supported: | None |
| CONNECTIONS | |
|---|---|
| Function | Location |
| 50-pin SCSI connector - external | CN1 |
| 50-pin SCSI connector - internal | CN2 |
| USER CONFIGURABLE SETTINGS | ||
|---|---|---|
| Function | Location | Setting |
| On-card TERMPWR enabled | RN1 - RN3 | installed |
| On-card TERMPWR disabled | RN1 - RN3 | Not installed |
| BASE MEMORY ADDRESS SELECT | ||
|---|---|---|
| Address | JP3/A | JP3/B |
| C800h |
open | open |
| CC00h | open | closed |
| D800h | closed | open |
| DC00h | closed | closed |
| INTERRUPT SELECT | ||||
|---|---|---|---|---|
| IRQ | JP2/A | JP2/B | JP2/C | JP2/D |
| IRQ11 |
open | open | closed | open |
| IRQ10 | open | open | open | closed |
| IRQ12 | open | closed | open | open |
| IRQ15 | closed | open | open | open |
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