2311 Disk Mode; 1403 Mode - IBM 2025 Maintenance Manual

1. 8 ~XTERNAL DECODES
1
~NEMONICS
1
AND 2540 Punch Mode
ADDMSSING (FIGURE 1-4 7)
AS-Field
This section summarizes the detailed bit Decode
Ext to CPU CPU to Ext
definitions of external facilities. 0000
AS-decodes
follo~ed by asterisk ( *) can be
0001
tested with the Branch on Condition or 0010 STPO
STPO
Branch on Mask words. 0011
STP1 STP1
0100• DYN
0101*
s
CPU lt-bde
0110*
MMSK
0111*
BA
AS-Field 1000 RPD1
Decode Ext to CPU CPU to Ext 1001 RPD2
ocoo
SW.l!E 1010 RP2
0001
S~CD
1011 RP1
0010 STPO STPO 1100*
0011 S'IP1 STP1
1101*
RS
0100* DYN SM 1110* RPS
0101*
s
1111*
PS PO
0110* MMSK
0111*
BA
JO
1000
JI
1403 Mode
1001 XIN'I JA
1010 TIM AS-Field
1011 Decode Ext to CPU CPU to Ext
1100* DR 0000
1101* 0001
1110* MC 0010
STPO STPO
1111*
BB
MW
0011 STPl STP1
0100• DYN
0101*
s
2311 Disk Mode
0110*
MMSK
0111* BA
AS-Field
1000
Decgd§ Ext to CPU CPU to Ext
1001
PCCL
0000 TGRI 1010 PRT
0001
EBI 1011
PRI PRO
0010 STPO STPO 1100•
0011 FOB FEBO 1101• PRC
0100*
DYN
1110*
PRS
0101* DASI 1111* PRD PR
0110* MMSK
0111*
EA
1COO CHI !052 (PR!)B) Mode
1001 CLI MS
1010
TC
AS-Field
1011 SDI TGRO Decode Ext to CPU
CPU to Ext
1100* FGA 0000
1101*
FFI FFC 0001
1110* DS FBO 0010 STPO STPO
1111* FOP FOP 0011 STPl ST Pl
0100• DYN
0101*
s
0110*
MMSK
0111*
BA
1000
1001
1010 TI
1011 TR
1100*
1101* TD
1110*
TT
1111• TU
TE
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