Sharp MZ-3500 service manual SUB CPU IPL Flow Chart, 105

122. SUB CPU IPL FLOW CHART

( POWER ON A

SUB CPU IPL J

T,m«,

1

In t,alize8255

AMode 0.8 Mode 1.

C 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

MZ-3500

IPL ROM is

broke u indicated on display

HALT	\
CUP STOP	I

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