User`s guide

CPU32 Symbolic Representation of Status Bits
Label Signal Symbol Value
~ShoCy ~Show_Cycle Int
Ext
0
1
Rd/~Wr Rd/~Wr Wr
Rd
0
1
~IFtch ~Inst_Fetch Fetch
(blank)
0
1
~PFlsh ~Pipe_Flush Flush
(blank)
0
1
Sizx Siz[0:1] long
byte
word
3byt
00
01
10
11
DSAckx DSAck[0:1] (blank)
word
byte
wait
00
01
10
11
~BErr ~BErr Error
(blank)
0
1
~Freez ~Freeze Bkgrnd
Runnin
0
1
~Bkpt ~Bkpt Break
(blank)
0
1
~BGAck ~BGAck NoBus
(blank)
0
1
FCx FC[0:2] show
user data
user pgrm
(blank)
(blank)
supr data
supr prgm
CPU
000
001
010
011
100
101
110
111
Analyzing the Target System
Status bit definition and encodings
E2480A Motorola CPU32 Preprocessor Interface 3–7