USER CUSTOMIZATION
M68CPU32BUG REV 1
C-17
C.7 BCC REV. C CHIP SELECTION SUMMARY
The table below covers Rev. C of the M68332BCC Business Card Computer and M68332PFB
Platform Board.
Table C-5. BCC Rev. C Chip Selection Summary
Signal
Board/Chip
Description
Memory Type
CSBOOT
BCC U3
CPU32Bug EPROM for MSB=UPPER=EVEN
CSBOOT
BCC U4
CPU32Bug EPROM for LSB=LOWER=ODD
CS0
BCC U1
write enable for MSB=UPPER=EVEN
RAM
CS1
BCC U2
write enable for LSB=LOWER=ODD
RAM
CS2
BCC U3/U1
read enable for MSB/LSB=BOTH
RAM
CS3
<unused>
CS4
PFB
ABORT push-button autovector
CS5
PFB U5
chip enable for MC68881/882. cut/-jump U5-J3 from
CS2 to CS5 required.
CS6
PFB U2
read enable for LSB=LOWER=ODD
RAM/EPROM
CS7
PFB U4
read enable for MSB=UPPER=EVEN
RAM/EPROM
CS8
PFB U1/U3
read enable for MSB/LSB=BOTH
RAM
CS9
PFB U1
write enable for LSB=LOWER=ODD
RAM
CS10
PFB U3
write enable for MSB=UPPER=EVEN
RAM