NCR CORPORATION
CLASS 3304
|
Processor |
80386SX |
|
Speed |
16/20MHz |
|
Chip Set |
Unidentified |
|
Max. Onboard DRAM |
1MB |
|
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 |
|
CONNECTIONS |
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|
Purpose |
Location |
Purpose |
Location |
|
VGA port |
J1 |
IDE interface |
P8 |
|
External floppy drive interface |
J2 |
Internal floppy drive interface |
P9 |
|
Parallel port |
J6 |
IDE/floppy drive power |
P10 |
|
Serial port (9 pin) |
P4 |
Proprietary external memory port |
S1 |
|
Serial port (25 pin) |
P5 |
Proprietary AT bus slot |
S2 |
|
USER CONFIGURABLE SETTINGS |
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|
Function |
Jumper/Switch |
Position |
|
|
|
CMOS memory normal operation |
JP1 |
pins 1 & 2 closed |
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|
CMOS memory clear |
JP1 |
pins 2 & 3 closed |
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|
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, 256-512KB disabled |
SW1/3 |
On |
|
|
Memory 512-1024KB enabled |
SW1/4 |
Off |
|
|
Memory 512-1024KB disabled |
SW1/4 |
On |
|
|
SMEM - Command in intern cycles disabled |
SW1/5 |
On |
|
|
SMEM - Command in intern cycles enabled |
SW1/5 |
Off |
|
|
CPU speed select automatic |
SW1/6 |
Off |
|
|
CPU speed select 8MHz |
SW1/6 |
On |
|
|
Monitor type select color |
SW2/1 |
On |
|
|
Monitor type select monochrome |
SW2/1 |
Off |
|
|
Power on speed select high |
SW2/2 |
On |
|
|
Power on speed select low |
SW2/2 |
Off |
|
|
Factory configured - do not alter |
SW201/1 |
Off |
|
|
Factory configured - do not alter |
SW201/2 |
Off |
|
|
BIOS type select AT |
SW201/3 |
Off |
|
|
BIOS type select PS/2 |
SW201/3 |
On |
|
|
Monitor type select standard display |
SW201/4 |
Off |
|
|
Monitor type select multisync display |
SW201/4 |
On |
|
|
Monitor type select VGA enabled |
SW201/5 |
On |
|
|
Monitor type select VGA disabled |
SW201/5 |
Off |
|
|
Standard interrupt handling |
SW201/6 |
Off |
|
|
Special application interrupt |
SW201/6 |
On |
|
|
Floppy drive interface enabled |
SW301/1 |
On |
|
|
Floppy drive interface disabled |
SW301/1 |
Off |
|
|
IDE drive installed |
SW301/2 |
Off |
|
|
IDE drive not installed |
SW301/2 |
On |
|
|
AT bus IDE interface pin 34 select -PDIAG |
SW301/3 |
Off |
|
|
AT bus IDE interface pin 34 select GND |
SW301/3 |
On |
|
|
IDE interface enabled |
SW301/4 |
Off |
|
|
IDE interface disabled |
SW301/4 |
On |
|
|
Factory configured - do not alter |
SW301/5 |
Off |
|
|
CMOS memory normal operation |
SW301/6 |
On |
|
|
CMOS memory clear |
SW301/6 |
Off |
|
USER CONFIGURABLE SETTINGS (CON'T) |
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|
Parallel port enabled |
SW601/1 |
Off |
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|
|
Parallel port disabled |
SW601/1 |
On |
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|
|
Parallel port address select 378 - 37Fh |
SW601/2 |
Off |
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|
Parallel port address select 278 - 27Fh |
SW601/2 |
On |
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|
Serial port (P5) enabled |
SW601/3 |
Off |
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Serial port (P5) disabled |
SW601/3 |
On |
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Serial port (P4) enabled |
SW601/4 |
Off |
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Serial port (P4) disabled |
SW601/4 |
On |
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|
Serial port (P5) address select 3F8 - 3FFh |
SW601/5 |
Off |
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|
|
Serial port (P4) address select 3F8 - 3FFh |
SW601/5 |
On |
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|
|
Factory configured - do not alter |
SW601/6 |
Off |
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|
Notes: On main boards not having a JP1, CMOS memory functions are controlled by SW301/switch 6. Chipset & CPU locations unverified. |
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|
DRAM CONFIGURATION |
|
|
Size |
Bank 0 |
|
1MB |
(8) 44256 |
|
Note:Memory size and location is unidentified. |
|
|
DRAM MAPPING CONFIGURATION |
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|
Ext memory |
Mapping area |
SW2/3 |
SW2/4 |
SW2/5 |
SW2/6 |
|
0MB |
100000 - 160000h |
Off |
On |
On |
On |
|
1MB |
200000 - 260000h |
On |
Off |
On |
On |
|
2MB |
300000 - 360000h |
Off |
Off |
On |
On |
|
3MB |
400000 - 460000h |
On |
On |
Off |
On |
|
4MB |
500000 - 560000h |
Off |
On |
Off |
On |
|
5MB |
600000 - 660000h |
On |
Off |
Off |
On |
|
6MB |
700000 - 760000h |
Off |
Off |
Off |
On |
|
7MB |
800000 - 860000h |
On |
On |
On |
Off |
|
8MB |
900000 - 960000h |
Off |
On |
On |
Off |
|
9MB |
A00000 - A60000h |
On |
Off |
On |
Off |
|
10MB |
B00000 - B60000h |
Off |
Off |
On |
Off |
|
11MB |
C00000 - C60000h |
On |
On |
Off |
Off |
|
12MB |
D00000 D60000h |
Off |
On |
Off |
Off |
|
13MB |
E00000 - E60000h |
On |
Off |
Off |
Off |
|
14MB |
F00000 - F60000h |
Off |
Off |
Off |
Off |
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DRIVE CONFIGURATION |
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|
Type |
SW401/1 |
SW401/2 |
|
1 internal; drive A or 2 internal; drive A in lower slot/drive B in upper slot or 1 internal, 1 external; internal drive A/external drive B |
Off |
Off |
|
1 external; drive A or 2 internal; drive A in upper slot/drive B in lower slot or 1 internal, 1 external; internal drive B/external drive A |
On |
On |