Spurious Vector Register - Motorola MTX Series Programmer's Reference Manual
Mtxa/pg4
Hide thumbs
Also See for MTX Series:
- Service manual (66 pages) ,
- Detailed service manual (639 pages) ,
- Theory/troubleshooting manual (60 pages)
Table of Contents
Advertisement
Spurious Vector Register
Offset
Bit
3
3
2
2
1
0
9
8
Name
Operation
R
Reset
$00
VECTOR This vector is returned when the Interrupt Acknowledge
register is read during a spurious vector fetch.
Timer Frequency Register
Offset
Bit
3
3
2
2
1
0
9
8
Name
Operation
Reset
This register is used to report the frequency (in Hz) of the clock source for
the global timers. Following reset, this register contains zero. system
initialization code must initialize this register to one-eighth the MPIC
clock frequency. For the Raven implementation of MPIC, a typical value
would be $7de290 which is 66/8 MHz or 8.25 MHz.
http://www.motorola.com/computer/literature
2
2
2
2
2
2
2
2
1
7
6
5
4
3
2
1
0
9
R
$00
2
2
2
2
2
2
2
2
1
7
6
5
4
3
2
1
0
9
TIMER FREQUENCY
Raven Interrupt Controller Implementation
$010E0
1
1
1
1
1
1
1
1
1
8
7
6
5
4
3
2
1
0 9 8 7 6 5 4 3 2 1 0
R
$00
$010F0
1
1
1
1
1
1
1
1
1
8
7
6
5
4
3
2
1
0 9 8 7 6 5 4 3 2 1 0
R/W
$00000000
2
VECTOR
R/W
$FF
2-65
Hide quick links:
Advertisement
Table of Contents
