Philips CD-I - Page 57

1.7. SYSCONT Registers
There are 8 registers so called Syscont registers in
order to support the video and interrupt functions.
- Register address
Address Reg. Width Note
1FFC40 SSR Word System support register
1FFC42 AIR
Word Abort interrupt register
1FFC44 CAIR Word Calendar interrupt register
1FFC46 NVIR Word VSC interrupt register
1FFC48 CDIIR Word CDIC interrupt register
1FFC4A PRIR Word Printer interrupt register
1FFC4C DUAIR Word DUART interrupt register
1FFC4E
FDDIR Word FDD. interrupt register
lFFCSO EXIR4 Word Ext. interrupt register
4
1FFC52 EXIR3
Word Ext. interrupt register
3
1FFC54 EXIR2
Word Ext. interrupt register
2
1FFC56 EXIRl
Word Ext. interrupt register
1
1FFC58
lFFCSA
lFFCSC
lFFCSE
- System support register
Software can read and write this register at the
same address.
3-17
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