Philips CD-I - Page 53

1.2. Microprocessor Unit.
The Multi Media Controller includes the 68070, a 16/32
bit microprocessor unit. The 68070 is functionally
equivalent to the 68000, but has additional functions
integrated into it. These include two DMA channels, for
fastest data transfer. The clock speed is 10 MHz.
1.3. System memory
1.3.1 System address map
Address
000000 -
080000 -
100000 -
180000 -
lFFCOO -
1FFC40 -
1FFC80 -
1FFF80 -
lFFFCO -
lFFFEO -
200000 -
210000 -
300000 -
310000 -
320000 -
330000 -
340000 -
350000 -
360000 -
380000 -
400000 -
500000 -
07FFFF
OFFFFF
17FFFF
lFFBFF
1FFC3F
1FFC7F
1FFF7F
lFFFBF
lFFFDF
lFFFFF
20FFFF
2FFFFF
30FFFF
31FFFF
32FFFF
33FFFF
34FFFF
35FFFF
37FFFF
3FFFFF
4FFFFF
6FFFFF
700000 - 77FFFF
<00780000 - Y~FFFFFF
80000000 - BFFFFFFF
COOOOOOO - FFFFFFFF
Name
System RAM (Bank 1)
System RAM (Bank 2)
Reserved for System RAM (Bank 3)
System ROM
Calendar Chip
Syscont Registers
Reserved for Option I/0
Reserved for D-RAM I/0
VSC Internal Register
(Slave Dual)
VSC Internal Register
(Master or Slave TV)
Expansion Driver ROM
Reserved for Option ROM
CD Interface
NV-RAM
APU. Interface
FDD. Interface
RS-232C Interface
Printer Interface
Not Used
Memory
card
Reserved for Optional Peripherals
Reserved for Optional RAM
System ROM
Not used
68070 Internal registers
Not used
3,-13
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