Display Registers - IBM 5100 Maintenance Information Manual

DISPLAY REGISTERS
To display the hex registers and read/write storage. size,
the DISPLAY REGISTERS switch must be in the
DISPLAY REGISTERS position. This displays the first
512 bytes or 256 halfwords of storage. The first 64
halfwords are the registers.
The 64 registers (halfwords) are divided into 4 levels (0,
1, 2, and 3) of 16 registers each
(0
through F). The
MAPs refer to the registers and levels in an abbreviated
manner. For example, R1 L2 means register 1 level 2.
The position of the L3Z-64-R32 switch determines the
number of registers displayed. In the L32 position the
32 registers in levels 0 and 2 are displayed. Likewise, in
the R32 position the 32 registers in levels 1 and 3 are
displayed. To display all 64 registers, move the switch
to 64.
The following examples and the illustration show how to
locate certain registers within the various levels. Use the
numbers in lines 5 and 6 to help locate the registers in
each level.
Note: These register bytes are displayed vertically.
ROLO = hex 1234
II
R1 LO
=
hex 5786 •
R FLO
=
hex 0000
II
RBL2
RAL2
The remaining level 0 registers contain hex EEEE.
ROL 1
=
hex 2345 •
RFL 1
=
hex FEDC
II
The remaining level 1 registers contain hex DDDD.
ROL2 = hex 9ABC . .
The remaining level 2 registers contain hex CCCC.
ROL3
=
hex BCBC
II
RFL3 = hex FFFF
II
The remaining level 3 registers contain hex BBBB.
Register
level Use
o
2
3
Normal Machine Operation
Communication/Serial I/O Mode
Printer and Tape
Keyboard
EEEEEEEEEEEEEEEEEE DDDDDDDDDDDDDDDDDDDDDDDDD
3-70
7 EEEEEEEEEEEEEEEEE DDDDDDDDDDDDDDDDDDDDDDDDD
Level 2
I~~C!I:"CCCCCCCCCCCCCCC
C BBBBBBBBBBBBBBBBBBBBBBBBBB
Line 5
Line 6
A CCCCCCCCCCCCCCCCC CCCCCCCC C BBBBBBBBBBBBBBBBBBBBBBBBBB F
00~~2233445566778899AABBCCDDEEF.FOO~~22333F5566778899AABBCCDDEEFF
00~~2233445566778899AABBCCDDEEFFOO~~2233FF5566778899AABBCCDDEEFF
0000000000000000000000000000000000000000000000000000000000000000
0000000000000000000000000000000000000000000000000000000000000000
0000000000000000000000000000000000000000000000000000000000000000
0000000000000000000000000000000000000000000000000000000000000000
0000000000000000000000000000000000000000000000000000000000000000
0000000000000000000000000000000000000000000000000000000000000000
0000000000000000000000000000000000000000000000000000000000000000
0000000000000000000000000000000000000000000000000000000000000000
0000000000000000000000000000000000000000600000000000000000000000
OOOOOOOpOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO0000000000
L32 R32
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