diff options
author | Lord-Nightmare <Lord-Nightmare@users.noreply.github.com> | 2014-12-11 06:01:22 -0500 |
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committer | Lord-Nightmare <Lord-Nightmare@users.noreply.github.com> | 2014-12-11 06:01:22 -0500 |
commit | e8907a4fbfaca40cad3cdc915ea547c886339c30 (patch) | |
tree | e3654d0d4c4f50d00b9be74a054523113dc2b6d5 | |
parent | 8e84d8f9e407d415b0bf6bc7099b3dcab250335a (diff) |
(MESS) Victor 9000 Keyboard: Document the RJ-45 Keyboard cable connector pinout. [Lord Nightmare]
-rw-r--r-- | src/mess/machine/victor9kb.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/src/mess/machine/victor9kb.c b/src/mess/machine/victor9kb.c index 568eb4f8667..a598e233216 100644 --- a/src/mess/machine/victor9kb.c +++ b/src/mess/machine/victor9kb.c @@ -166,8 +166,28 @@ J1 (aka CN1) connections: Pins 5,and 6 also have a .0047uF capacitor to GND (forming some sort of LC filter) There is another .0047uF capacitor to ground from the connection between 74LS14 pin 1 and the 100 Ohm 5% resistor which connects to pin 4 (forming some sort of RC filter) - -22-950 pin 11 (OE?) - 68KOhm 5% resistor - 22-908 pin 5 (HYS) +Exar Custom connections between each other: +------------------------------------------- +22-950 pin 11 (OE?) - 68KOhm 5% resistor - 22-908 pin 5 (HYS) + +Cable connecting J1/CN1 to the Victor: +-------------------------------------- +RJ45 when looking at end of plug (not socket!) +.||||||||. +|87654321| +|__----__| + |__| + +RJ45 pins Wire Color Connection +1 White J1 pin 1 (VCC) +2 Yellow J1 pin 2 (GND) +3 Green J1 pin 3 (GND) +4 Orange J1 pin 4 (?KBACK?) +5 Blue J1 pin 5 (?KBRDY?) +6 Red J1 pin 6 (?KBDATA?) +7 Black J1 pin 7 (VCC) +8 shield/bare Keyboard Frame Ground + Key Layout (USA Variant): (the S0x markings appear on the back of the PCB) |------------------------------------------------------------------------------------| |