Path: utzoo!utdoe!generic!pnet91!glalonde
From: glalonde@pnet91.cts.com (Glen Lalonde)
Newsgroups: comp.sys.apple2
Subject: vbl for apple //
Message-ID: <67@generic.UUCP>
Date: 30 Oct 90 03:00:04 GMT
Sender: root@generic.UUCP
Organization: People-Net [pnet91], Etobicoke, ON
Lines: 13

The last time I was asked for this was about four years ago.
From: MICRO, no 62. July 1983.
"A Clock interrupt for your apple"
(will work on a apple ][ or apple ][+)
Connect Pin 11 of D11 to Pin 4 of H7/8(the 6502). The best method
is to use 30-gauge wire-wrap wire. I tried this on my old apple //+ and
it works. If I recall correctly you don't get interrupts at 1/60 of a
second but something like every 1/59.xxx, don't recall what the xxx is
though. Sorry, it is 59.92 interrupts /second(so the article indicates)
If you want more info let me know, micro was a 6502/6809 magazine.

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