Subject: Re: Pinout for IWM chip
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From: david@uow.edu.au (David Wilson)
Newsgroups: comp.sys.apple2
Date: 12 Dec 99 05:56:31 GMT
Organization: University of Wollongong, Australia
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Frank Carney <frankc@cyberhighway.net> writes:

>Does anyone have a pinout for the IWM or SWIM chips?0

Here it is:

1	to drive	SeekPh0
2	to drive	SeekPh2
3	to CPU bus	A0
4	to CPU bus	A1
5	to CPU bus	A2
6	to CPU bus	A3
7	to CPU bus	DISK*	(chip enable)
8	to drive	WRDATA
9	to drive	WRREQ*
10	to CPU bus	D0
11	to CPU bus	D1
12	to CPU bus	D2
13	to CPU bus	D3
14	GND
15	to CPU bus	D4
16	to CPU bus	D5
17	to CPU bus	D6
18	to CPU bus	D7
19	to drive	DR2*	(drive 2 select)
20	to drive	DR1*	(drive 1 select)
21	to drive	WRPROT
22	to drive	RDDATA
23	to CPU bus	RESET*
24	to CPU bus	7M
25	to CPU bus	Q3
26	+5v
27	to drive	SeekPh3
28	to drive	SeekPh1

--
David Wilson  School of IT & CS, Uni of Wollongong, Australia