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122.
SUB CPU IPL
FLOW CHART
(
POWER
ON A
SUB
CPU
IPL
J
MZ-3500
T,m«,
In
A
C
1
t,alize8255
Mode
0.8
Mode
1.
OUT
1
SUB CPU
READY
OFF
1
Rest
GDC
1
Check
ROM sum
Initialize
GDC and
check
G
VRAM
Set
the
custom
LSI
CSPI
and
CSP2
control
boards
Initialize GDCagatr
C-GDC, G-GDC
command
transfer
IPL ROM is
broke
u
indicated
on
display
HALT
CUP
STOP
\
I
-
105
-