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IBM PC 5150 Technical Reference

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The Technical Reference for the IBM Personal Computer (5150), part of IBM's Personal Computer Hardware Reference Library, is the Revised Edition of April 1984, IBM part number 6322507. The hosted PDF has 309 pages. It is IBM's design reference for the 5150: the system board, the 8087 coprocessor, the power supply, the keyboard, the full BIOS listing, the 8088 instruction set, the character set and communications. Section 1 ends with the system board logic diagrams, ten sheets for the 64/256 KB board (pp. 1-37 to 1-46).

Contents

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From the manual's contents list (pp. ix to xi):

  • Section 1, System Board (1-1): description (1-3), microprocessor (1-3), data flow diagrams (1-5), system memory map (1-8), timers and interrupts (1-11), ROM, RAM and DMA (1-13), the I/O channel with its diagram, signal descriptions and address map (1-14 to 1-24), speaker circuit (1-25), cassette interface and its block diagrams (1-27), 8255A I/O bit map (1-31), system board switch settings (1-33), specifications and card specifications (1-34), logic diagrams (1-36)
  • Section 2, Coprocessor (2-1): description, programming interface and hardware interface of the 8087
  • Section 3, Power Supply (3-1): description (3-3), input requirements and dc and ac outputs (3-4, 3-5), overvoltage and overcurrent protection (3-5), Power Good signal and connector pin assignments (3-6)
  • Section 4, Keyboard (4-1): description (4-3), block diagram (4-4), keyboard diagrams (4-5), connector specifications (4-12), keyboard logic diagram (4-13)
  • Section 5, System BIOS (5-1): BIOS usage (5-3), keyboard encoding (5-14), BIOS cassette logic (5-25), BIOS listing (5-29)
  • Section 6, Instruction Set (6-1): 8088 instructions and the 8087 extensions
  • Section 7, Characters, Keystrokes and Colors (7-1)
  • Section 8, Communications (8-1)
  • Glossary, bibliography and index

What this manual does not contain

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What it settles

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  • The power supply: continuous rating 63.5 W; outputs +5 V at 2.3 to 7.0 A (+5 % / −4 %), −5 V at 0 to 0.3 A (+10 % / −8 %), +12 V at 0.4 to 2.0 A (+5 % / −4 %) and −12 V at 0 to 0.25 A (+10 % / −9 %); fuses of 2 A (120 V) and 1 A (220/240 V); Power Good after a minimum 5-second off time, with a 100 ms delay; under- and over-voltage sense levels; and a switched, fused ac outlet of 0.75 A maximum, a nonstandard connector intended only for the IBM Monochrome Display (pp. 3-3 to 3-6).
  • The processor clock: 4.77 MHz, the 14.31818 MHz crystal frequency divided by three (p. 1-3).
  • The meaning of PARITY CHECK 1 (system board memory) and PARITY CHECK 2 (I/O channel check), from the BIOS listing (p. 5-40).

Pages that cite this document

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Download: IBM PC 5150 Technical Reference.pdf

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