Philips CD-I - Expansion Module Technical Data

Appendix 7. Expansion Module Technical Data
1. Hardware Specifications
1.1.1 Expansion ROM
In this ROM the following are stored:
o Floppy disk drive driver
o Printer driver
o RS-232C driver
o RBF manager
- Address
- Access time
200000 - 20FFFF
Max. 150
nsec.
1.1.2 System address map
Address
000000 -
lFFFFF
200000 -
20FFFF
210000 - 2FFFFF
300000 -
32FFFF
330000 -
33FFFF
340000 -
34FFFF
350000 -
35FFFF
360000 -
37FFFF
380000 - 3FFFFF
400000 - 4FFFFF
500000 -
6FFFFF
700000 - 77FFFF
00780000 - 7FFFFFFF
80000000 -
BFFFFFFF
cooooooo
- FFFFFFFF
Reserved for MMC module
Driver ROM
Reserved for option ROM
Reserved for MMC module
FDD interface
RS-232C interface
Printer interface
Not Used
Reserved for MMC module
Reserved for optional peripherals
Reserved for optional RAM
Reserved for MMC module
Not
used
680 7D internal registers
Not used
7-8
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