Vector 4 - Page 193

YECTOR GRAPHIC, INC,
4.2.2
V 4-4
Waveforms For SBC
SIGNAL
32MHz
16MHz
SMHz
4MHz
2MHz
TC/LATCH
CPU/VID (IMZ)
LATCHf (video)
LATCHI (CPU)
9.1MHz @ clock
RAS
MHIGH
1)VIDEO 2)CPU CAS
DISP.ENBL
CPU/VID
BUSRQ
S8AENBL
MEMRD
MEMWR
LOCATION
Ul23-6
U115-14
U115-13
U115-12
Ul15-11
U115-15
U107-9
U89-3
U89-6
U107-5
U69-9
U69-5
U86-8
U98-18
U107-8
U102-6
U102-5
U84-4
U84-1
7200-0001
DESCRIPTION
B
-
— L]
I L |
3.125 ns pulse every 490 us
(active)
1MHz square wave (active)
6.25 ns pulse every 980 ns (active)
6.25 ns pu'lse every 980 ns (active)
5.1MHz square wave (active)
2MHz square wave triggered on
rising edge of 4MHz
2MHz square wave triggered on
rising edge of 32MHz
Positive edge triggered on 2MHz
square wave
Active square wave
1MHz square wave
High unless I/O communication
needed
Low unless I/O or ??? is
functioning
Low except when reading from
memory
Low except when writing to
memory /
09-01-82