VideoRAM
ZXNet echo conference «hardware.zx»
Hi all.
I have given here part of the Scorpio diagram (yellow)
What do you think, if the inputs B0, B1, B3
supply the combinations of bits we need,
won't we be able to display
to screen memory from addresses:
#0000
#2000
#4000
#6000
#8000
#A000
#C000
#E000
D17
+--------+
V3---|A0|mx|Y0|---MA5
V4---|A1| |Y1|---MA6
V5---|A2| |Y2|---MA7
H3---|A3| |Y3|---MA8
+--+ | |
GND--|B0| | |
+5V--|B1| | |
CNSCR|B2| | |
+5V--|B3| | |
+---+ | |
RAS--| S|| | |
/H1--|/CS| | |
+--------+
Sincerely, Sergey Moskalev aka Gris/Red_Triangle..
[Orthodoxy] [Communism] [Law Faculty] [SamGU] [Speccy] [Amiga]