| I have checked the notes file and the circuit board of the A520
modulator and have come up with the following pin assignments.
Pin Description
3 Red
4 Green
5 Blue
10 Composite Sync
15 ?? goes to 7474 Flip Flop on A520
16-20 Ground
22 +12 Volts
23 + 5 Volts
Can anybody help with details on Voltage Specifications on pin 3,4.5,10
and what's pin 15 for???? Looks like some control signal for the
oscillator circuit on the A520 (from quick checkout of circuit).
I'm trying to connect the modulator to an IBM PC with CGA graphics.
Regards
Tony
|
| Hi,
Here's what the "Introduction to the AMIGA 500" says...
PIN NAME DESCRIPTION
--- ---- -----------
1 XCLK* EXTERNAL CLOCK
2 XCLKEN* EXTERNAL CLOCK ENABLE
3 RED ANALOG RED
4 GREEN ANALOG GREEN
5 BLUE ANALOG BLUE
6 DI DIGITAL INTENSITY
7 DB DIGITAL BLUE
8 DG DIGITAL GREEN
9 DR DIGITAL RED
10 CSYNC* COMPOSITE SYNC
11 HSYNC* HORIZONTAL SYNC
12 VSYNC* VERTICAL SYNC
13 GNDRTN RETURN FOR XCLKEN*
14 ZD* ZERO DETECT
15 C1* CLOCK OUT
16 GND GROUND
17 " "
18 " "
19 " "
20 " "
21 -12V -12 VOLTS POWER (50 mA)
22 +12V +12 VOLTS POWER (100 mA)
23 +5V +5 VOLTS POWER (100 mA)
WARNING: Pins 21, 22, and 23 on the RGB monitor connector are used
for external power. Connect these pins ONLY if power from them is
required by the external device.
- JIM CAD*
|