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author Lord-Nightmare <Lord-Nightmare@users.noreply.github.com>2014-12-11 06:01:22 -0500
committer Lord-Nightmare <Lord-Nightmare@users.noreply.github.com>2014-12-11 06:01:22 -0500
commite8907a4fbfaca40cad3cdc915ea547c886339c30 (patch)
treee3654d0d4c4f50d00b9be74a054523113dc2b6d5
parent8e84d8f9e407d415b0bf6bc7099b3dcab250335a (diff)
(MESS) Victor 9000 Keyboard: Document the RJ-45 Keyboard cable connector pinout. [Lord Nightmare]
-rw-r--r--src/mess/machine/victor9kb.c24
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)
|------------------------------------------------------------------------------------|