AMSTRAD CPC6128 Service Manual page 5

FUNCTION DIAGRAMS
ICil4 Veo 82 6D 7D 72 6a 6D 5D. 50
OUTPUT IQ ID 2D 20 30 3D 4D 4Q GN
CONROL ss ae sane
ICi04.105 STROBE A
16109.19 Yoo. 2a SELECT PATA INPUTS _ OUTP uy
SE ED TE
2C3 202 2Cl 200 ey
-
iL
A > ——
1G
L A bee ic2_ tcl ico ty.
TTT sy lel
OBE Bo —_______. OU TP,
1G SELECT DATA INPUTS y UTED
STR
INPUTS OUTPUTS
{clot Veo DY 9 8
A B C »D
BCD -TO-DECIMAL
Qi 23456789
Lb
OUTPUTS
GND
1Ci06 vec 8@ 8D 7D 7Q 6a 6D 5D 5a CLOCK
CLEAR 1Q ID 2D 28 3@ 2D 4D 4@
ICS Veo 2G lyt 2Ad 1¥2 2A3 1Y3 2A2 (Yd 2Al
1G 1A] 2¥4 1A2 2Y3 1A2 2¥2 1A4 2Y! GND
(CHO Veo 4B 44 4Y 3B 3A BY
1A 1B
1Y @A 2B 2Y GND
ICH2 Voc 4B 4A 4Y 3B 3A BY
iB YY 2A 2B 2Y GND