Commodore PC 10 - Page 370

1232 MS-DOS User's Reference
c
(R)egister
Register
Purpose:
Displays the contents of one or more CPU registers.
Syntax:
R( register-name I
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 BP SS
BX SI CS
ex DI IP
DX DS PC
SP ES F
(IP and PC both refer
to the Instruction
Pointer.)
Any other entry for register-name results in a BR error message.
c.
L,
If you type F as the register-name, debug displays each flag with I
a two-character alphabetic code. To change any flag, type the L
opposite two-letter code. The flags are then either set or cleared.