Английская Википедия:Intel 8288
The Intel 8288 is a bus controller designed for Intel 8086/8087/8088/8089. The chip is supplied in 20-pin DIP package. The 8086 (and 8088) operate in maximum mode, so they are configured primarily for multiprocessor operation or for working with coprocessors. Necessary control signals are generated by the 8288. It was used in the IBM PC, XT and its clones.[1] IBM PC AT used its successor Intel 82288.
Pin assignment and function for the control lines
| Name | Pin | Input (I), Output (O) |
Function |
|---|---|---|---|
| VCC | 20 | Input power (+5 V) | |
| GND | 10 | Ground (0 V) | |
| Шаблон:Overline, Шаблон:Overline, Шаблон:Overline | 19, 3, 18 | I | Status input |
| CLK | 2 | I | Clock |
| Шаблон:Overline | 6 | I | Address Enable |
| CEN | 15 | I | Command Enable |
| IOB | 1 | I | Input/Output Bus Mode |
| Шаблон:Overline | 7 | O | Memory Read Command |
| Шаблон:Overline | 9 | O | Memory Write Command |
| Шаблон:Overline | 8 | O | Advanced Memory Write Command |
| Шаблон:Overline | 13 | O | I/O Read Command |
| Шаблон:Overline | 11 | O | I/O Write Command |
| Шаблон:Overline | 12 | O | Advanced I/O Write Command |
| Шаблон:Overline | 14 | O | Interrupt Acknowledge |
| DT/Шаблон:Overline | 4 | O | Data Transmit/Receive |
| DEN | 16 | O | Data Enable |
| MCE/Шаблон:Overline | 17 | O | MCE (if IOB is LOW), Шаблон:Overline (if IOB is HIGH) |
| ALE | 5 | O | Address Latch Enable |
Variants
Both Intel 8288 and I8288 (industrial grade) version were available for US$14.30 and $33.75 in quantities of 100 respectively.[2][3] The available 82C88 CMOS version was outsourced to Oki Electronic Industry Co., Ltd.[4] The package version of Intel 82C88 branded in 20-pin PLCC of sampling at fourth quarter of 1985.[5]
References
External links
- ↑ Шаблон:Cite web
- ↑ The 8086 Family: Concepts and realities, Intel Preview Special Issue: 16-Bit Solutions, Intel Corporation, May/June 1980, page 19
- ↑ 8086 Available for industrial environment, Intel Preview Special Issue: 16-Bit Solutions, Intel Corporation, May/June 1980, page 29
- ↑ Intel Corporation, "NewsBit: Intel Licenses Oki on CMOS Version of Several Products", Solutions, July/August 1984, Page 1.
- ↑ Ashborn, Jim; "Advanced Packaging: A Little Goes A Long Way", Intel Corporation, Solutions, January/February 1986, Page 2
