Motorola M68CPU32BUG User Manual Page 85

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DEBUG MONITOR COMMANDS
M68CPU32BUG/D REV 1 3-55
RD Register Display RD
The source and destination function code registers (SFC, DFC) include a two character
mnemonic:
Function Code Mnemonic Description
0 F0 Undefined
1 UD User Data
2 UP User Program
3 F3 Undefined
4 F4 Undefined
5 SD Supervisor Data
6 SP Supervisor Program
7 CS CPU Space
To set the display to D6 and A3 only.
CPU32Bug>RD =D6/A3<CR>
D6 =00000000 A3 =00000000
00003000 4AFC ILLEGAL
CPU32Bug>
Note that the above sequence sets the display to D6 only and then adds register A3 to the display.
To restore all the MPU registers.
CPU32Bug>rd +mpu<CR>
PC =00003000 SR =2700=TR:OFF_S_7_..... VBR =00000000
SFC =0=F0 DFC =0=F0 USP =00003830 SSP* =00004000
D0 =00000000 D1 =00000000 D2 =00000000 D3 =00000000
D4 =00000000 D5 =00000000 D6 =00000000 D7 =00000000
A0 =00000000 A1 =00000000 A2 =00000000 A3 =00000000
A4 =00000000 A5 =00000000 A6 =00000000 A7 =00004000
00003000 4AFC ILLEGAL
CPU32Bug>
Note that an equivalent command is ’’RD +PC-A7’’ or ’’RD =PC-A7’’.
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