“Intel 8288”的意思、由来-开放百科全书

词条

Intel 8288

释义

Pin assignment and function for the control lines
Variants
References
External links

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

 ! bgcolor="#ABCDEF" | Name ! bgcolor="#ABCDEF" width="50" | Pin ! bgcolor="#ABCDEF" width="80" | Input (I),
Output (O) ! bgcolor="#ABCDEF" | Function

V_CC	20	Input power (+5 V)
GND	10	Ground (0 V)
S₀}}, {{overline\|S₁}}, {{overline\|S₂}}	19, 3, 18	I	Status input
CLK	2	I	Clock
AEN}}	6	I	Address Enable
CEN	15	I	Command Enable
IOB	1	I	Input/Output Bus Mode
MRDC}}	7	O	Memory Read Command
MWTC}}	9	O	Memory Write Command
AMWC}}	8	O	Advanced Memory Write Command
IORC}}	13	O	I/O Read Command
IOWC}}	11	O	I/O Write Command
AIOWC}}	12	O	Advanced I/O Write Command
INTA}}	14	O	Interrupt Acknowledge
R}}	4	O	Data Transmit/Receive
DEN	16	O	Data Enable
PDEN}}	17	O	PDEN}} (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]

References

1. ^{{cite web|title=The structure of the original IBM PC's motherboard|url=http://www.tu-chemnitz.de/informatik/RA/news/stack/kompendium/vortraege_96/Motherboard/section1.html|work=tu-chemnitz.de|accessdate=November 27, 2013}}
2. ^The 8086 Family: Concepts and realities, Intel Preview Special Issue: 16-Bit Solutions, Intel Corporation, May/June 1980, page 19
3. ^8086 Available for industrial environment, Intel Preview Special Issue: 16-Bit Solutions, Intel Corporation, May/June 1980, page 29

External links

8288 Bus-Controller data sheet

3 : Intel chipsets|IBM PC compatibles|Input/output integrated circuits

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