TEXAS INSTRUMENTS SYSTEM 1000 Processor 80286 Processor Speed 12MHz Chip Set AMD Max. onboard DRAM 640KB (location unknown) 12MB external Cache None BIOS AMD Dimensions 330mm x 218mm I/O Options External memory card, parallel port, serial port NPU Options 80287 [Image] CONNECTIONS Purpose Location Purpose Location Serial port J8 External memory card J3 connector Parallel port J9 External memory card J4 connector USER CONFIGURABLE SETTINGS Function Jumper/Switch Position » BIOS size select standard E1 & E2 Open size BIOS size select larger size E1 & E2 Closed » Speaker select internal E3, E4, & E5 E4 & E5 closed Speaker select external E3, E4, & E5 Open » Factory configured - do not E6 & E7 N/A alter » BUS cycle wait state select SW1/switch 1 On normal BUS cycle wait state select SW1/switch 1 Off shortened » NPU disabled SW1/switch 2 Off NPU enabled SW1/switch 2 On » Factory configured - do not SW1/switch 5 Off alter » NPU speed select 4MHz SW1/switch 6 Off NPU speed select 8MHz SW1/switch 6 On » Factory configured - do not SW1/switch 7 Off alter » Monitor type select color SW2/switch 7 On Monitor type select SW2/switch 7 Off monochrome BASE MEMORY CONFIGURATION Size SW1/3 SW1/4 256KB Off Off 512KB Off On 640KB On On PARALLEL PORT CONFIGURATION Mode LPT IRQ SW2/1 SW2/2 SW2/3 Enabled LPT1 IRQ7 Off Off Off Disabled LPT1 IRQ5 On Off On Enabled LPT1 IRQ5 Off Off On Disabled LPT1 IRQ7 On Off Off Enabled LPT2 IRQ7 Off On Off Disabled LPT2 IRQ5 On On On Enabled LPT2 IRQ5 Off On On Disabled LPT2 IRQ7 On On Off SERIAL PORT CONFIGURATION Mode COM IRQ SW2/4 SW2/5 SW2/6 Enabled COM1 IRQ7 Off Off Off Disabled COM1 IRQ5 On Off On Enabled COM1 IRQ5 Off Off On Disabled COM1 IRQ7 On Off Off Enabled COM2 IRQ7 Off On Off Disabled COM2 IRQ5 On On On Enabled COM2 IRQ5 Off On On Disabled COM2 IRQ7 On On Off LED SELF TEST CONFIGURATION Green Yellow Red Item Failed On On On CPU On On Off 8142 test keyboard On Off On 8254 timer 1 test On Off Off ROM CRC check Off On On CMOS RAM test Off On Off Memory refresh test Off Off On 0 - 256KB RAM test Off Off Off Turbo mode test Off Off Off Turbo parity error Off Off On Nonturbo parity error On On On 8259 test On On On 8254 timer interrupt On On Off Protected mode test On Off On 8254 timer 2 test On Off Off DMA test [Image] MEMORY CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 Bank 4 Bank 5 512KB (2) NONE NONE NONE NONE NONE 256K x 9 1MB (2) (2) NONE NONE NONE NONE 256K x 256K x 9 9 1.5MB (2) (2) (2) NONE NONE NONE 256K x 256K x 256K x 9 9 9 2MB (2) (2) (2) (2) NONE NONE 256K x 256K x 256K x 256K x 9 9 9 9 2MB (2) 1M NONE NONE NONE NONE NONE x 9 2.5MB (2) (2) (2) (2) (2) NONE 256K x 256K x 256K x 256K x 256K x 9 9 9 9 9 3MB (2) (2) (2) (2) (2) (2) 256K 256K x 256K x 256K x 256K x 256K x x 9 9 9 9 9 9 4MB (2) 1M (2) 1M NONE NONE NONE NONE x 9 x 9 6MB (2) 1M (2) 1M (2) 1M NONE NONE NONE x 9 x 9 x 9 8MB (2) 1M (2) 1M (2) 1M (2) 1M NONE NONE x 9 x 9 x 9 x 9 10MB (2) 1M (2) 1M (2) 1M (2) 1M (2) 1M NONE x 9 x 9 x 9 x 9 x 9 640KB (2) 1M (2) 1M (2) 1M (2) 1M (2) 1M (2) 1M x x 9 x 9 x 9 x 9 x 9 9 MEMORY JUMPER CONFIGURATION SIMMs E1 & E2 E3 & E4 256K x 9 Closed Closed 1M x 9 Open Open