Gary Block Diagram - Commodore Amiga 500 User Manual

68000
Addresses
(8)
Address Strobe (AS)
UOS, LOS
Clocks
(C2,C3)
Override (OVA)
Overlay (OVL)
Processor read write
(PAW)
Expansion Board
Present (EX PEN)
DBA
XAoy
Override
(OVA)
KAeset
Keyboard Aesel
>
Gary Block Diagram
Address decode
)
1
lIus
Cnnt ... 1
Flopp)' Control
Logic
t
Reset
Control
A-24
Technical Reference
AAM Enable (AAME )
RGA Enable (RGAE)
AOM Enable (AOME)
1
Aeal time clock read
and write (ATCA , ATCW)
VPA
CoA
)
Bidirectional
COW
tri -slate lalch
LATCH
control
o7ACK
BLS
Aesel
Halt