MC68000 MOTOROLA [Motorola, Inc], MC68000 Datasheet - Page 47

• Manufacturer Part Number: MC68000
• Manufacturer: MOTOROLA [Motorola, Inc]

MOTOROLA
! Base + 80E
! Base + 814
! Base + 818
Base + 800
Base + 802
Base + 804
Base + 808
Base + 80C
Base + 80F
Base + 810
Base + 811
Base + 812 #
Base + 816
Base + 81A
Base + 81C
Base + 81E #
Base + 820 #
Base + 822 #
Base + 824 #
Base + 826 #
Base + 828 #
Base + 82A
Base + 82C
Base + 82E
Base + 830 #
Base + 832 #
Base + 834 #
Base + 836 #
Base + 838 #
Base + 83A #
Base + 83C #
Base + 83E #
Address
All undefined and reserved bits within registers and parameter
RAM values written by the user in a given application should be
written with zero to allow for future enhancements to the device.
PADDR
PBDDR
PACNT
PADAT
PBCNT
PBDAT
Name
SAPR
DAPR
GIMR
CMR
RES
BCR
CSR
RES
FCR
RES
RES
RES
RES
RES
RES
OR0
OR1
OR2
OR3
BR0
BR1
BR2
BR3
IMR
IPR
ISR
Width
16
16
32
32
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
8
8
8
8
Table 2-9. Internal Registers
MC68302 USER’S MANUAL
Int Cont
Int Cont
Int Cont
Int Cont
Int Cont
Int Cont
Block
IDMA
IDMA
IDMA
IDMA
IDMA
IDMA
IDMA
IDMA
IDMA
CS0
CS0
CS1
CS1
CS2
CS2
CS3
CS3
PIO
PIO
PIO
PIO
PIO
PIO
PIO
CS
CS
NOTE
Reserved
Channel Mode Register
Source Address Pointer
Destination Address Pointer
Byte Count Register
Channel Status Register
Reserved
Function Code Register
Reserved
Global Interrupt Mode Register
Interrupt Pending Register
Interrupt Mask Register
In-Service Register
Reserved
Reserved
Port A Control Register
Port A Data Direction Register
Port A Data Register
Port B Control Register
Port B Data Direction Register
Port B Data Register Reserved
Reserved
Reserved
Base Register 0
Option Register 0
Base Register 1
Option Register 1
Base Register 2
Option Register 2
Base Register 3
Option Register 3
Description
MC68000/MC68008 Core
Reset Value
XXXX XXXX
XXXX XXXX
XXXX
DFFD
DFFD
DFFD
DFFD
C001
C000
C000
C000
0000
0000
0000
0000
0000
0000
0000
0080
0000
XXXX ##
XXXX ##
XX
00
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