Original PC Hardware Reference

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CD: 54 Original PC Hardware Reference (continued) Environmental Specifications Power-supply output 157 watts Worldwide (110v/60Hz, 220v/50Hz) Yes Auto-sensing/switching Maximum current: Yes 90–137 VAC Operating range: 4.5 amps Temperature 60–90 degrees F Relative humidity 8–80 percent Maximum operating altitude 7,000 feet Heat (BTUs/hour) 824 Noise (Average db, operating, 1m) 42 FCC classification Class B Table 13 lists the XT Model 286 system-unit part numbers. Table 13 IBM XT-286 Model Part Numbers Description Number XT Model 286 system unit, 6MHz 0 wait state, 640KB, serial/parallel, 1.2MB floppy drive, one 20MB hard disk 5162286 Optional Accessories 5 1/4-inch, half-height 360KB drive 6450325 3 1/2-inch, half-height 720KB internal drive 6450258 3 1/2-inch, half-height 720KB external drive 2683190 80287 math coprocessor option 6450211 Enhanced Keyboard Accessories Clear keycaps (60) with paper inserts 6341707 Blank light keycaps 1351710 Blank dark keycaps 1351728 Paper keycap inserts (300) 6341704 Keycap removal tools (6) 1351717
CMOS RAM/RTC 8259 Interrupt controllers Figure 14 The IBM XT-286 motherboard. An Introduction to the XT Model 286 CD: 55 8/16-bit ISA bus slots 30-pin 256K SIMMs 80286 processor 80287 math coprocessor Keyboard connector Battery connector Power-supply connector 128K memory chips Display switch 8237 DMA controllers
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This is the Current C-Head at the B
Page 3 and 4: An Introduction to the PC (5150) CD
Page 5 and 6: Option adapters Figure 1 The IBM PC
Page 7 and 8: An Introduction to the PC (5150) CD
Page 9 and 10: Read-only memory { 64K to 256K read
Page 11 and 12: Expansion Slots Total adapter slots
Page 13 and 14: An Introduction to the PC Convertib
Page 15 and 16: ■ Serial/parallel adapter (#4015)
Page 17 and 18: An Introduction to the PC Convertib
Page 19 and 20: An Introduction to the XT (5160) CD
Page 25 and 26: Disk Storage An Introduction to the
Page 27 and 28: Switch Block 1 (PC and XT) Switch 5
Page 29 and 30: An Introduction to the Portable PC
Page 31 and 32: Disk Storage Internal disk and tape
Page 33 and 34: IBM also offered only three differe
Page 35 and 36: Power switch Power supply selector
Page 37 and 38: An Introduction to the AT CD: 37 Th
Page 39 and 40: An Introduction to the AT CD: 39 AT
Page 41 and 42: An Introduction to the AT CD: 41 Ty
Page 43 and 44: Table 10—Drive Types An Introduct
Page 45 and 46: Memory An Introduction to the AT CD
Page 47 and 48: Variable capacitor clock trimmer RO
Page 49 and 50: An Introduction to the XT Model 286
Page 51 and 52: ■ 1.2MB floppy drive ■ 20MB har
Page 53: Disk Storage An Introduction to the
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