Texas Instruments TMS320C3 Series, User Manual, Page: 59 / 166

Host Software
SSTEP_CPU, RUN_CPU, HALT_CPU
4-25 Functional Overview
Single-Step Command
SSTEP_CPU
Syntax MSGS SSTEP_CPU (void)
Description The SSTEP_CPU routine single-steps one instruction by restoring the context
of the CPU, executing one instruction, and then saving the CPU context. This
command places the CPU in command mode.
Arguments None
Return Value NO_ERR Command and data completed successfully
XMIT_ERR Failed transmission
RECV_ERR Failed reception
Run Command
RUN_CPU
Syntax MSGS RUN_CPU (void)
Description The RUN_CPU routine executes instructions starting at the program counter
obtained from the CPU context save area and ending at a breakpoint, if one
has been set.
Arguments None
Return Value NO_ERR Command and data completed successfully
XMIT_ERR Failed transmission
Halt Command
HALT_CPU
Syntax MSGS HALT_CPU (void)
Description The HALT_CPU routine halts the execution of instructions. This command
places the CPU in command mode and saves the CPU context.
Arguments None
Return Value NO_ERR Command completed successfully
RECV_ERR Failed reception