Computer Hardware User Manual

Table Of Contents
GCSR Programming Model
http://www.motorola.com/computer/literature 2-103
2
Table 2-5 shows a summary of the GCSR.
VMEchip2 Revision Register
This register is the VMEchip2 revision register. The revision level for the
VMEchip2 starts at 0 and is incremented if mask changes are required. The
VMEchip2 used on the MVME1x7P is revision $01 or greater.
Table 2-5. VMEchip2 Memory Map (GCSR Summary)
VMEchip2 GCSR Base Address = $FFF40100
Offsets Bit Numbers
VM
E
bus
Loca
l Bus151413121110 9 8 7 6 5 4 3 210
0 0 Chip Revision Chip ID
24
LM
3
LM
2
LM
1
LM
0
SI
G3
SI
G2
SI
G1
SI
G0
RS
T
IS
F
B
F
SCO
N
SYSF
L
XXX
4 8 General Purpose Control and Status Register 0
6 C General Purpose Control and Status Register 1
8 10 General Purpose Control and Status Register 2
A 14 General Purpose Control and Status Register 3
C 18 General Purpose Control and Status Register 4
E 1C General Purpose Control and Status Register 5
ADR/SIZ Local Bus: $FFF40100/VMEbus: $XXY0 (8 bits)
BIT 15 . . . 8
NAME VMEchip2 Revision Register
OPER R
RESET 01 PS