Commodore PC - Register

1232 MS-DOS User's Reference
U
(R)egister Register
Purpose:
Displays the contents of one or more CPU registers.
Syntax:
B{register-name]
Comments:
If you do not type a register-name, the R (register) command
dumps the register storage area and displays the contents of all
registers and flags.
If you do type a register-name, the 16-bit value of that register is
displayed in hexadecimal, and a colon then appears as a prompt.
You can now either type a value to change the register, or press \—/
the return key if you don't want a change.
Following is a list of the valid register-names: >
AX
BX
CX
DX
SP
BP
SI
DI
DS
ES
ss
cs
IP
PC
F
(IP and PC both refer
to the Instruction
Pointer.)
Any other entry for register-name results in a BR error message.
If you type F as the register-name, debug displays each flag with
a two-character alphabetic code. To change any flag, type the
opposite two-letter code. The flags are then either set or cleared.
u