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# NCR CORPORATION
CLASS 3304
Processor 80386SX
Speed 16/20MHz
Chip Set Unidentified
Max. Onboard 1MB
DRAM
BIOS Unidentified
Cache None
Dimensions 353mm x 265mm
I/O Options Proprietary external memory card, VGA port,
parallel port, serial ports (2), floppy drive
interfaces (2), IDE interface, proprietary AT bus
NPU Options 80387SX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------+----------+--------------------+----------|
| VGA port | J1 | IDE interface | P8 |
|-----------------+----------+--------------------+----------|
| External floppy | J2 | Internal floppy | P9 |
| drive interface | | drive interface | |
|-----------------+----------+--------------------+----------|
| Parallel port | J6 | IDE/floppy drive | P10 |
| | | power | |
|-----------------+----------+--------------------+----------|
| Serial port (9 | P4 | Proprietary | S1 |
| pin) | | external memory | |
| | | port | |
|-----------------+----------+--------------------+----------|
| Serial port (25 | P5 | Proprietary AT bus | S2 |
| pin) | | slot | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|---------------------------------+---------------+----------|
| » | CMOS memory normal | JP1 | pins 1 & |
| | operation | | 2 closed |
|---+-----------------------------+---------------+----------|
| | CMOS memory clear | JP1 | pins 2 & |
| | | | 3 closed |
|---+-----------------------------+---------------+----------|
| » | Bus speed select slow | SW1/1 | Off |
|---+-----------------------------+---------------+----------|
| | Bus speed select fast | SW1/1 | On |
|---+-----------------------------+---------------+----------|
| » | Pipeline mode disabled | SW1/2 | Off |
|---+-----------------------------+---------------+----------|
| | Pipeline mode enabled | SW1/2 | On |
|---+-----------------------------+---------------+----------|
| » | Memory 0-512KB enabled | SW1/3 | Off |
|---+-----------------------------+---------------+----------|
| | Memory 0-256KB enabled, | SW1/3 | On |
| | 256-512KB disabled | | |
|---+-----------------------------+---------------+----------|
| » | Memory 512-1024KB enabled | SW1/4 | Off |
|---+-----------------------------+---------------+----------|
| | Memory 512-1024KB disabled | SW1/4 | On |
|---+-----------------------------+---------------+----------|
| » | SMEM - Command in intern | SW1/5 | On |
| | cycles disabled | | |
|---+-----------------------------+---------------+----------|
| | SMEM - Command in intern | SW1/5 | Off |
| | cycles enabled | | |
|---+-----------------------------+---------------+----------|
| » | CPU speed select automatic | SW1/6 | Off |
|---+-----------------------------+---------------+----------|
| | CPU speed select 8MHz | SW1/6 | On |
|---+-----------------------------+---------------+----------|
| » | Monitor type select color | SW2/1 | On |
|---+-----------------------------+---------------+----------|
| | Monitor type select | SW2/1 | Off |
| | monochrome | | |
|---+-----------------------------+---------------+----------|
| » | Power on speed select high | SW2/2 | On |
|---+-----------------------------+---------------+----------|
| | Power on speed select low | SW2/2 | Off |
|---+-----------------------------+---------------+----------|
| » | Factory configured - do not | SW201/1 | Off |
| | alter | | |
|---+-----------------------------+---------------+----------|
| » | Factory configured - do not | SW201/2 | Off |
| | alter | | |
|---+-----------------------------+---------------+----------|
| » | BIOS type select AT | SW201/3 | Off |
|---+-----------------------------+---------------+----------|
| | BIOS type select PS/2 | SW201/3 | On |
|---+-----------------------------+---------------+----------|
| » | Monitor type select | SW201/4 | Off |
| | standard display | | |
|---+-----------------------------+---------------+----------|
| | Monitor type select | SW201/4 | On |
| | multisync display | | |
|---+-----------------------------+---------------+----------|
| » | Monitor type select VGA | SW201/5 | On |
| | enabled | | |
|---+-----------------------------+---------------+----------|
| | Monitor type select VGA | SW201/5 | Off |
| | disabled | | |
|---+-----------------------------+---------------+----------|
| » | Standard interrupt handling | SW201/6 | Off |
|---+-----------------------------+---------------+----------|
| | Special application | SW201/6 | On |
| | interrupt | | |
|---+-----------------------------+---------------+----------|
| » | Floppy drive interface | SW301/1 | On |
| | enabled | | |
|---+-----------------------------+---------------+----------|
| | Floppy drive interface | SW301/1 | Off |
| | disabled | | |
|---+-----------------------------+---------------+----------|
| » | IDE drive installed | SW301/2 | Off |
|---+-----------------------------+---------------+----------|
| | IDE drive not installed | SW301/2 | On |
|---+-----------------------------+---------------+----------|
| » | AT bus IDE interface pin 34 | SW301/3 | Off |
| | select -PDIAG | | |
|---+-----------------------------+---------------+----------|
| | AT bus IDE interface pin 34 | SW301/3 | On |
| | select GND | | |
|---+-----------------------------+---------------+----------|
| » | IDE interface enabled | SW301/4 | Off |
|---+-----------------------------+---------------+----------|
| | IDE interface disabled | SW301/4 | On |
|---+-----------------------------+---------------+----------|
| » | Factory configured - do not | SW301/5 | Off |
| | alter | | |
|---+-----------------------------+---------------+----------|
| » | CMOS memory normal | SW301/6 | On |
| | operation | | |
|---+-----------------------------+---------------+----------|
| | CMOS memory clear | SW301/6 | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS (CON'T) |
|------------------------------------------------------------|
| » | Parallel port enabled | SW601/1 | Off |
|--------+--------------------------------+-----------+------|
| | Parallel port disabled | SW601/1 | On |
|--------+--------------------------------+-----------+------|
| » | Parallel port address select | SW601/2 | Off |
| | 378 - 37Fh | | |
|--------+--------------------------------+-----------+------|
| | Parallel port address select | SW601/2 | On |
| | 278 - 27Fh | | |
|--------+--------------------------------+-----------+------|
| » | Serial port (P5) enabled | SW601/3 | Off |
|--------+--------------------------------+-----------+------|
| | Serial port (P5) disabled | SW601/3 | On |
|--------+--------------------------------+-----------+------|
| » | Serial port (P4) enabled | SW601/4 | Off |
|--------+--------------------------------+-----------+------|
| | Serial port (P4) disabled | SW601/4 | On |
|--------+--------------------------------+-----------+------|
| » | Serial port (P5) address | SW601/5 | Off |
| | select 3F8 - 3FFh | | |
|--------+--------------------------------+-----------+------|
| | Serial port (P4) address | SW601/5 | On |
| | select 3F8 - 3FFh | | |
|--------+--------------------------------+-----------+------|
| » | Factory configured - do not | SW601/6 | Off |
| | alter | | |
|------------------------------------------------------------|
| Notes: On main boards not having a JP1, CMOS memory |
| functions are controlled by SW301/switch 6. |
| |
| Chipset & CPU locations unverified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 1MB | (8) 44256 |
|------------------------------------------------------------|
| Note:Memory size and location is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM MAPPING CONFIGURATION |
|------------------------------------------------------------|
| Ext | Mapping area | SW2/3 | SW2/4 | SW2/5 | SW2/6 |
| memory | | | | | |
|-----------+----------------+-------+-------+-------+-------|
| 0MB | 100000 - | Off | On | On | On |
| | 160000h | | | | |
|-----------+----------------+-------+-------+-------+-------|
| 1MB | 200000 - | On | Off | On | On |
| | 260000h | | | | |
|-----------+----------------+-------+-------+-------+-------|
| 2MB | 300000 - | Off | Off | On | On |
| | 360000h | | | | |
|-----------+----------------+-------+-------+-------+-------|
| 3MB | 400000 - | On | On | Off | On |
| | 460000h | | | | |
|-----------+----------------+-------+-------+-------+-------|
| 4MB | 500000 - | Off | On | Off | On |
| | 560000h | | | | |
|-----------+----------------+-------+-------+-------+-------|
| 5MB | 600000 - | On | Off | Off | On |
| | 660000h | | | | |
|-----------+----------------+-------+-------+-------+-------|
| 6MB | 700000 - | Off | Off | Off | On |
| | 760000h | | | | |
|-----------+----------------+-------+-------+-------+-------|
| 7MB | 800000 - | On | On | On | Off |
| | 860000h | | | | |
|-----------+----------------+-------+-------+-------+-------|
| 8MB | 900000 - | Off | On | On | Off |
| | 960000h | | | | |
|-----------+----------------+-------+-------+-------+-------|
| 9MB | A00000 - | On | Off | On | Off |
| | A60000h | | | | |
|-----------+----------------+-------+-------+-------+-------|
| 10MB | B00000 - | Off | Off | On | Off |
| | B60000h | | | | |
|-----------+----------------+-------+-------+-------+-------|
| 11MB | C00000 - | On | On | Off | Off |
| | C60000h | | | | |
|-----------+----------------+-------+-------+-------+-------|
| 12MB | D00000 D60000h | Off | On | Off | Off |
|-----------+----------------+-------+-------+-------+-------|
| 13MB | E00000 - | On | Off | Off | Off |
| | E60000h | | | | |
|-----------+----------------+-------+-------+-------+-------|
| 14MB | F00000 - | Off | Off | Off | Off |
| | F60000h | | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRIVE CONFIGURATION |
|------------------------------------------------------------|
| Type | SW401/1 | SW401/2 |
|----------------------------------------+---------+---------|
| 1 internal; drive A or 2 internal; | Off | Off |
| drive A in lower slot/drive B in upper | | |
| slot or 1 internal, 1 external; | | |
| internal drive A/external drive B | | |
|----------------------------------------+---------+---------|
| 1 external; drive A or 2 internal; | On | On |
| drive A in upper slot/drive B in lower | | |
| slot or 1 internal, 1 external; | | |
| internal drive B/external drive A | | |
+------------------------------------------------------------+