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Setting Up the Support
2–6
TMS 109A Socket 7 Microprocessor Support
Table 2–1: Control group symbol table definitions (cont.)
Control group value
Symbol
Meaning
PRDY
SCYC
BOFF3#
D/P#
BUSCHK#
LAST_D
M/IO#
INIT
SMIACT#
AHOLD
D/C#
IRESET_L
LOCK#
HLDA
W/R#
FETCH*
X X 0
X X X 1
X X X 0
1 1 0 0
Opcode read
P_LOCK_RD
0 X 0
X X X 0
X X X 0
1 X 1 0
Primary processor locked read cycle
D_LOCK_RD
1 X 0
X X X 0
X X X 0
1 X 1 0
Dual processor locked read cycle
LOCK_RD*
X X 0
X X X 0
X X X 0
1 X 1 0
Locked read cycle
P_LOCK_WR
0 X 0
X X X 0
X X X 0
1 X 1 1
Primary processor locked write cycle
D_LOCK_WR
1 X 0
X X X 0
X X X 0
1 X 1 1
Dual processor locked write cycle
LOCK_WR*
X X 0
X X X 0
X X X 0
1 X 1 1
Locked write cycle
P_MEM_RD
0 X 0
X X X X
X X X 0
1 1 1 0
Primary processor nonopcode read
D_MEM_RD
1 X 0
X X X X
X X X 0
1 1 1 0
Dual processor nonopcode read
MEM_RD*
X X 0
X X X X
X X X 0
1 1 1 0
Read from memory, nonopcode
P_MEM_WR
0 X 0
X X X X
X X X 0
1 1 1 1
Primary processor write to memory
D_MEM_WR
1 X 0
X X X X
X X X 0
1 1 1 1
Dual processor write to memory
MEM_WR*
X X 0
X X X X
X X X 0
1 1 1 1
Write to memory
P_I/O_RD
0 X 0
X X X X
X X X 0
1 0 1 0
Primary processor I/O read cycle
D_I/O_RD
1 X 0
X X X X
X X X 0
1 0 1 0
Dual processor I/O read cycle
I/O_RD*
X X 0
X X X X
X X X 0
1 0 1 0
I/O read cycle
P_I/O_WR
0 X 0
X X X X
X X X 0
1 0 1 1
Primary processor I/O write cycle
D_I/O_WR
1 X 0
X X X X
X X X 0
1 0 1 1
Dual processor I/O write cycle
I/O_WR*
X X 0
X X X X
X X X 0
1 0 1 1
I/O write cycle
P_MEM_R/W*
0 X 0
X X X X
X X X 0
1 1 1 X
Any primary processor read or write
D_MEM_R/W*
1 X 0
X X X X
X X X 0
1 1 1 X
Any dual processor read or write
MEM_R/W*
X X 0
X X X X
X X X 0
1 1 1 X
Any memory read or write cycle
P_I/O_R/W*
0 X 0
X X X X
X X X 0
1 0 1 X
Any primary processor I/O cycle
D_I/O_R/W*
1 X 0
X X X X
X X X 0
1 0 1 X
Any dual processor I/O cycle
I/O_R/W*
X X 0
X X X X
X X X 0
1 0 1 X
Any I/O read or write cycle
P_READ*
0 X 0
X X X X
X X X 0
1 X 1 0
Any primary processor read cycle
D_READ*
1 X 0
X X X X
X X X 0
1 X 1 0
Any dual processor read cycle
READ*
X X 0
X X X X
X X X 0
1 X 1 0
Any read cycle
P_WRITE*
0 X 0
X X X X
X X X 0
1 X 1 1
Any primary processor write cycle
D_WRITE*
1 X 0
X X X X
X X X 0
1 X 1 1
Any dual processor write cycle
WRITE*
X X 0
X X X X
X X X 0
1 X 1 1
Any write cycle
P_INT_ACK
0 X 0
X X X X
X X X 0
1 0 0 0
Primary processor int. acknowledge
Summary of Contents for Socket 7 TMS109A
Page 12: ...Service Safety Summary viii TMS 109A Socket 7 Microprocessor Support...
Page 15: ...Getting Started...
Page 16: ......
Page 45: ...Operating Basics...
Page 46: ......
Page 54: ...Setting Up the Support 2 8 TMS 109A Socket 7 Microprocessor Support...
Page 75: ...Specifications...
Page 76: ......
Page 82: ......
Page 83: ...Maintenance...
Page 84: ......
Page 87: ...Diagrams...
Page 88: ......
Page 90: ...5 2 TMS 109A Socket 7 Hardware Support...
Page 91: ...5 3 TMS 109A Socket 7 Microprocessor Support...
Page 94: ...TMS 109A Socket 7 Microprocessor Support 5 6...
Page 96: ...TMS 109A Socket 7 Microprocessor Support 5 8...
Page 98: ...TMS 109A Socket 7 Microprocessor Support 5 10...
Page 100: ...TMS 109A Socket 7 Microprocessor Support 5 12...
Page 101: ...Replaceable Parts...
Page 102: ......
Page 108: ...Replaceable Parts 6 6 TMS 109A Socket 7 Microprocessor Support...
Page 109: ...Index...
Page 110: ......