28 Mungo545 User’s Manual
J4: TV-Out: PAL/ NTSC
Sim721’s digital PC to TV encoder is a stand-alone integrated circuit which
provides a PC 99 compliant solution for TV output. It provides a universal
digital input port to accept a pixel data stream from a compatible VGA
controller (or equivalent) and converts this directly into NTSC or PAL TV
format. Below are their pin assignments.
Signal Name
Pin #
Pin #
Signal Name
Y
1
2
COMP
C
3
4
GND
GND
5
6
GND
GND
7
8
NC
J8: Parallel Port Connector
The following table describes the pin out assignments of this connector.
Signal Name
Pin #
Pin #
Signal Name
Line printer strobe
1
14
AutoFeed
PD0, parallel data 0
2
15
Error
PD1, parallel data 1
3
16
Initialize
PD2, parallel data 2
4
17
Select
PD3, parallel data 3
5
18
Ground
PD4, parallel data 4
6
19
Ground
PD5, parallel data 5
7
20
Ground
PD6, parallel data 6
8
21
Ground
PD7, parallel data 7
9
22
Ground
ACK, acknowledge
10
23
Ground
Busy
11
24
Ground
Paper empty
12
25
Ground
Select
13
N/A
N/A
Summary of Contents for Mungo545
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Page 86: ...Mungo545 User s Manual 81 Appendix A I O Port Address Map B Interrupt Request Lines IRQ...
