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 [Image] 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 operation JP1 pins 1 & 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 standard SW201/4 Off 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 operation SW301/6 On 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 378 - 37Fh SW601/2 Off Parallel port address select 278 - 27Fh SW601/2 On » 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 select 3F8 - 3FFh SW601/5 Off Serial port (P4) address select 3F8 - 3FFh SW601/5 On » Factory configured - do not alter SW601/6 Off 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 memory Mapping area SW2/3 SW2/4 SW2/5 SW2/6 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 Off On Off Off D60000h 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