The Museum of HP Calculators
HP Forum Archive 01
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|Re: HP41C connectors|
Message #1 Posted by Reinhard Hawel on 27 Feb 1999, 12:41 p.m.
I can give you the pinning. For other questions just ask.
Caution: no guarantees for anything
Source: HP-41C service manual 00041-90008 July '79
view into I/O port
Vbat Vcc GND DATA ISA CLK2 1 2 3 4 5 6
12 11 10 9 8 7
B4 B3 PWO FI SYNC CLK1^
CLK1 Phi1 timing line CLK2 Phi2 timing line SYNC timing/information line ISA instruction/address line DATA data line PWO power on/off line FI input flag line Vbat battery voltage Vcc system voltage GND Ground B3 I/O port coding B4 I/O port coding
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