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# IOMEGA CORPORATION
PC2, PC2B
+------------------------------------------------------------+
|------------------------------------------------------------|
| Data bus: | 8-bit ISA |
|--------------------------+---------------------------------|
| Size: | Half-length, full-height card |
|--------------------------+---------------------------------|
| Hard drive supported: | None |
|--------------------------+---------------------------------|
| Floppy drives supported: | Two Bernoulli Box drives |
+------------------------------------------------------------+
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|-------------------------------------------------+----------|
| 34-pin Bernoulli Box connector - external drive | CN1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|---------------------------------------+----------+---------|
| » | DMA channel 3 select | SW3 | off |
|---+-----------------------------------+----------+---------|
| | DMA channel 1 select | SW3 | on |
|---+-----------------------------------+----------+---------|
| » | DMA enabled | SW4 | off |
|---+-----------------------------------+----------+---------|
| | PIO (Programmed Input/Ouput) | SW4 | on |
| | enabled | | |
|---+-----------------------------------+----------+---------|
| » | IRQ5 select | SW6 | off |
|---+-----------------------------------+----------+---------|
| | IRQ7 select | SW6 | on |
|---+-----------------------------------+----------+---------|
| » | Factory configured - do not alter | SW7 | off |
|---+-----------------------------------+----------+---------|
| » | Two 10MB Bernoulli drives in | SW8 | off |
| | system | | |
|---+-----------------------------------+----------+---------|
| | One 10MB Bernoulli drive in | SW8 | on |
| | system | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PORT ADDRESS SELECTION |
|------------------------------------------------------------|
| Address | SW1 | SW2 | SW5 |
|-------------------+-------------+-------------+------------|
| » | 340h | on | on | off |
|---+---------------+-------------+-------------+------------|
| | 348h | on | on | on |
|---+---------------+-------------+-------------+------------|
| | 350h | off | on | off |
|---+---------------+-------------+-------------+------------|
| | 358h | off | on | on |
|---+---------------+-------------+-------------+------------|
| | 360h | on | off | off |
|---+---------------+-------------+-------------+------------|
| | 368h | on | off | on |
|---+---------------+-------------+-------------+------------|
| | 370h | off | off | off |
|---+---------------+-------------+-------------+------------|
| | Disabled | off | off | off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ROM ADDRESS SELECTION (PC2B ONLY) |
|------------------------------------------------------------|
| Address | JP1 | JP2 | JP3 | JP4 |
|----------------------------+-------+-------+-------+-------|
| | C800:0000h - | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
| | C800:1FFFh | | | | |
|----+-----------------------+-------+-------+-------+-------|
| | CA00:0000h - | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
| | CA00:1FFFh | | | | |
|----+-----------------------+-------+-------+-------+-------|
| » | CE00:0000h - | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 |
| | CE00-1FFFh | | | | |
|----+-----------------------+-------+-------+-------+-------|
| | D000:0000h - | 1 & 2 | 2 & 3 | 1 & 2 | 1 & 2 |
| | D000:1FFFh | | | | |
|----+-----------------------+-------+-------+-------+-------|
| | D200:0000h - | 1 & 2 | 2 & 3 | 1 & 2 | 2 & 3 |
| | D200:1FFFh | | | | |
|----+-----------------------+-------+-------+-------+-------|
| | D400:0000h - | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 |
| | D400:1FFFh | | | | |
|----+-----------------------+-------+-------+-------+-------|
| | D600:0000h - | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 |
| | D600:1FFFh | | | | |
|----+-----------------------+-------+-------+-------+-------|
| | D800:0000h - | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 |
| | D800:1FFFh | | | | |
|----+-----------------------+-------+-------+-------+-------|
| | DA00:0000h - | 2 & 3 | 1 & 2 | 1 & 2 | 2 & 3 |
| | DA00:1FFFh | | | | |
|----+-----------------------+-------+-------+-------+-------|
| | DC00:0000h - | 2 & 3 | 1 & 2 | 2 & 3 | 1 & 2 |
| | DC00:1FFFh | | | | |
|----+-----------------------+-------+-------+-------+-------|
| | DE00:0000h - | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 |
| | DE00:1FFFh | | | | |
|----+-----------------------+-------+-------+-------+-------|
| | E000:0000h - | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 |
| | E000:1FFFh | | | | |
|----+-----------------------+-------+-------+-------+-------|
| | E200:0000h - | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 |
| | E200:1FFFh | | | | |
|----+-----------------------+-------+-------+-------+-------|
| | E400:0000h - | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 |
| | E400:1FFFh | | | | |
|----+-----------------------+-------+-------+-------+-------|
| | RAM/ROM disabled | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note: Designated pins should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| Model PC2 is the same as PC2B with the exception of jumper |
| shunts, and RAM and ROM chips. PC2 can be upgraded to PC2B |
| by ordering an upgrade kit that includes shunts and chips. |
+------------------------------------------------------------+