Table 1-8. Mc2 Chip Register Map - Motorola MVME172 Programmer's Reference Manual

MC2 Chip Base Address = $FFF42000
Offset D31-D24
$00 MC2 chip ID
$04
$08
$0C
$10
$14 LSB Prescaler
Count Register
$18 Tick Timer 4
Interrupt Control
$1C DRAM Parity Error
Interrupt Control
$20 DRAM Space Base Address Register
$24 DRAM Space
Size
$28 LANC Error Status
$2C SCSI Error Status
$30
$34
$38
$3C
$40 Bus Clock
$44 RESET Switch
Control
$48 DRAM Control
$4C
http://www.mcg.mot.com/literature
1Board Description and Memory Maps
0Memory Maps

Table 1-8. MC2 Chip Register Map

D23-D16
MC2 chip
Revision
Tick Timer 1 Compare Register
Tick Timer 1 Counter Register
Tick Timer 2 Compare Register
Tick Timer 2 Counter Register
Prescaler
Clock Adjust
Tick Timer 3
Interrupt Control
SCC Interrupt
Control
DRAM/SRAM
Options
Reserved
General Purpose
Inputs
Tick Timer 3 Compare Register
Tick Timer 3 Counter Register
Tick Timer 4 Compare Register
Tick Timer 4 Counter Register
EPROM Access
Time Control
Watchdog Timer
Control
Reserved
32-bit Prescaler Count Register
D15-D8
General Interrupt Vector
Control
Tick Timer 2
Control
Tick Timer 2
Interrupt Control Interrupt Control
Tick Timer 4
Control
SRAM Space Base Address Register
SRAM Space
Size
LANC Interrupt LANC Bus Error
Control Interrupt Control
MVME172 Version SCSI Interrupt
Flash Parameter ABORT
Control Interrupt Control
Access &
Watchdog Time
Base Select
MPU Status
Memory Maps
D7-D0
Base Register
Tick Timer 1
Control
Tick Timer 1
Tick Timer 3
Control
Reserved
Control
Switch
Reserved
Reserved
1-27
1