Intel 8288
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The Intel 8288 is a bus controller chip which is designed for Intel-8086/8087/8088/8089. The block is supplied in 20-pin DI. The 8086 (and 8088) operate in maximum mode, so they are configured primarily for multiprocessor operation or for working with coprocessors. They are generated by the 8288. [1]
Pin assignment and function for the control lines
| Bezeichnung | Pin | Eingabe (E), Ausgabe (A) |
Function |
|---|---|---|---|
| VCC | 20 | Versorgungsspannung (+5 V) | |
| GND | 10 | Mass (0 V) | |
| S0, S1, S2 | 19, 3, 18 | E | Status Input |
| CLK | 2 | E | Clock |
| AEN | 6 | E | Address Enable |
| CEN | 15 | E | Command Enable |
| IOB | 1 | E | Input/Output Bus Mode |
| MRDC | 7 | A | Memory Read Command |
| MWTC | 9 | A | Memory Write Command |
| AMWC | 8 | A | Advanced Memory Write Command |
| IORC | 13 | A | I/O Read Command |
| IOWC | 11 | A | I/O Write Command |
| AIOWC | 12 | A | Advanced I/O Write Command |
| INTA | 14 | A | Interrupt Acknowledge |
| DT/R | 4 | A | Data Transmit/Receive |
| DEN | 16 | A | Data Enable |
| MCE/PDEN | 17 | A | MCE (wenn IOB auf LOW steht), PDEN (wenn IOB auf HIGH steht) |
| ALE | 5 | A | Address Latch Enable |
References
- ↑ "The structure of the original IBM PC's motherboard". tu-chemnitz.de. Retrieved November 27, 2013.
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