simple_prom − description of simple prom monitor is combination of the MIPS prom monitor and debug monitor.  This monitor does not rely on system features beyond the presence of a MIPS R2000 processor.  It is intended as the most rapid path to bring-up a monitor for developers who are not using the MIPS R2300 cpu or R2350 memory boards.  Since the simple prom is designed to operate with only the facilities provided by the R2000 processor, certain features of the MIPS prom monitor and debug monitor were eliminated to produce the simple prom.  The following commands are available in the simple prom, they behave as documented in manual section 1 of the spp documentation. 

brkset or display breakpoints
ccontinue from breakpoint
cacheflushflush cache contents
callinvoke procedure
disdisassemble R2000 instructions
dumpdump contents of memory
fillfill memory with pattern
gget contents of memory location
gostart execution
gotillcontinue until address (see goto.1spp)
helpdisplay command syntax
initinitialize monitor
pset contents of memory
sexecute single instruction
Sexecute single instruction
sloaddownload Motorola s-records
spindiagnostic spin loop
stringdisplay memory contents as string
tlbdumpdump contents of R2000 TLB
tlbflushflush contents of R2000 TLB
tlbmapsetup mapping in R2000 TLB
tlbpidset R2000 TLB process id
tlbptovsearch R2000 TLB for translation
unbrkremove breakpoint

The following commands are not supported by the simple prom monitor:

autoauto-boot operating system
bootboot program
catcat file
cpcopy file
debugremote debugging interface
disabledisable console
enableenable console
loaddownload program from tip
printenvdisplay contents of environment
setenvset contents of environment