;
; Author:	Elektor
; Software:	ESS 543 IC30
; Project:	High Res Graphics Board
; Function:	High-speed timing controller
; Indentifier:	IC310
; Device:	82S123
;
; Could be ported to a PAL16L8.
; A PAL16R8 could replace IC30 and IC16.
;
; Inputs:
;
; a0 counter Qa IC29
; a1 counter Qb IC29 
; a2 counter Qc IC29
; a3 PS0 from IC11 pin 2
; a4 PS1 from IC11 pin 5 or Q6 from IC7 (link selected)
;
; Outputs:
;
; d0 STR
; d1 !RAS to RAS decoder IC10
; d2 !CAS
; d3 CK
; d4 !LD
; d5 A7X
; d6 unused
; d7 unused
;
; Assembles online at https://www.asm80.com/
;
;
.cpu 6502
.org 0 
; page 0
	.db 	00010110b   ; $16
	.db 	00000000b   ; $00
	.db 	00010000b   ; $10
	.db 	00010000b   ; $10
	.db 	00011100b   ; $1C
	.db 	00011100b   ; $1C
	.db 	00011100b   ; $1C
; page 1
	.db 	00010110b   ; $16
	.db 	00000000b   ; $00
	.db 	00010000b   ; $10
	.db 	00010000b   ; $10
	.db 	00011100b   ; $1C
	.db 	00111100b   ; $3C
	.db 	00111100b   ; $3C
	.db 	00110111b   ; $37
; page 2
	.db 	00110110b   ; $36
	.db 	00100000b   ; $20
	.db 	00110000b   ; $30
	.db 	00110000b   ; $30
	.db 	00111100b   ; $3C
	.db 	00011100b   ; $1C
	.db 	00011100b   ; $1C
	.db 	00010111b   ; $17
; page 3
	.db 	00110110b   ; $36
	.db 	00100000b   ; $20
	.db 	00110000b   ; $30
	.db 	00110000b   ; $30
	.db 	00111100b   ; $3C
	.db 	00111100b   ; $3C
	.db 	00111100b   ; $3C
	.db 	00110111b   ; $37
.end