Node 516
This node functions as a wire node from 416 to 517. It is also a frequency divider.
Source code
516 d/r 3/
go 00 @b dup or ! @b @b go ; 03
init down b! right a! go ; 07
4 d 8 r 2 u ether
go 00 @b dup or ! @b @b go ; 03
init down b! right a! go ; 07
4 d 8 r 2 u ether
Definitions
- go
- Wait for signal from DOWN and write zero each third pulse to RIGHT.
- init
- Set registers A and B, and jump to go.
Description
This note divides incoming 24 Mpulses/s clock train by three, resulting in 8 Mpulses/s clock used for generation of VGA synchronization signals and character clock. Clock pulses are received from node 416 as dummy words, and are converted here to zeros.