I cannot find the 590-0194-A cable pin out anywhere.Is the Apple 590-0194-A cable pin out a straight through pin out?
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The pin assignments are in this post, copied from the Apple II FAQ.
Note that it looks a lot like a 15-pin Macintosh video cable, but the pins assigned to Red/Green are swapped.
The cable should be straight thru.
Thanks for the information. I was able to use a 15 pin straight through cable to connect the Apple IIe Extended 80-col RGB card to the Apple Color Monitor 100 RGB input using this information:
Apple IIe Extended 80-col RGB card pinout:
Pin 1 = ground
Pin 2 =GREEN TTL BIT
Pin 3 = COMPOSITE SYNC
Pin 4 = (not used)
Pin 5 = RED TTL BIT
Pin 6 = ground
Pin 7 = -5 V (not used)
Pin 8 = +12 V (not used)
Pin 9 = BLUE TTL BIT
Pin 10 = INTENSITY BIT
Pin 11 = (not used)
Pin 12 = (not used)
Pin 13= ground
Pin 14 = (not used)
Pin 15 = (not used)
Next, the AppleColor Monitor 100 RGB input pinout:
Most of the signal names matched. The Apple Extended 80-col RGB card pin 7 = -5V and pin 8 = +12V worried me, but since they also had the '(not used)' note and I read in some other post that someone had stated that any 15-pin straight through cable should work. I decided to give a 15-pin straight through cable a try. It worked!
Now I want to connect an Apple III Color Video RGB Port to the AppleColor Monitor 100 RGB input.
I found the following Apple III Color Video RGB Port pinout:
Pin 1 = Shield Ground - Establishes electrical ground.
Pin 2 = XRGB4 - One of 4 RGB outputs. Pins 2, 5, 9, & 10 are TTL outputs with instantaneous color information. A linear-weighted sum of these four
signals will form a true 16 color RGB video signal.
Pin 3 = SYNC - Composite negative syncronous signal.
Pin 4 = PDI - Not used
Pin 5 = XRGB1 - See pin 2 (one of 4 RGB outputs)
Pin 6 = GND - Power & Signal Ground
Pin 7 = -5V - Maximum load 200 mA
Pin 8 = +12V - Maximum load 500 mA
Pin 9 = XRGB2 - See pin 2 (one of 4 RGB outputs)
Pin 10 = XRGB8 - See pin 2 (one of 4 RGB outputs)
Pin 11 = BWVID - NTSC B&W Composite video with negative going sync, 1 volt peak to peak into a 75 ohm load.
Pin 12 = NTSC - NTSC Color video with negative going sync, 1 volt peak to peak into a 75 ohm load.
Pin 13 = GND - Power & Signal Ground
Pin 14 = -12V - Maximum load 200 mA
Pin 15 = +5V - Maximum load 1 Amp.
The Apple III Color Video RGB Port pinout appears to have a few more pins with different names/function.
Apple III pin 7 (-5V) and pin 8 (+12V) do not say not used, but AppleColor monitor has pin 7 (Monitor ID/Sense) and Pin 8 (No Connection) - not sure it is okay to use a 15pin straight through cable for these pins
Apple III has pin 10 = (XRGB8) one of 4 RGB outputs, but AppleColor monitor has pin 10 as Monitor ID/Sense - not sure it is okay to use a 15pin straight through cable for these pins
Apple III has pin 11 = BWVID and pin 12 = NTSC, but AppleColor monitor has pin 11 = Sync Ground and pin 12 = Vertical Sync (Optional/Configurable) - not sure it is okay to use a 15pin straight through cable for these pins
Apple III has pin 14 = -12V and pin 15 = +5V, but AppleColor monitor has pin 14 = Horizontal Sync Ground and pin 15 = Horizontal Sync - not sure it is okay to use a 15pin straight through cable for these pins
This is why I would really want to know if Apple Cable 590-0194-A is a 15-pin straight through cable.
The AppleColor Monitor 100 manual seems to indicate that the included cable (the 590-0194-A cable) will work for Apple II and Apple III computers as it does not state that a different cable is needed for the Apple III computer.
Is it okay to use a 15-pin straight through cable to connect the Apple III Color Video RGB port to the AppleColor Monitor 100 RGB input?