136 lines
6.6 KiB
Markdown
Executable File
136 lines
6.6 KiB
Markdown
Executable File
Spinsim 0.75
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This version of spinsim supports about two-thirds of the opcodes in the P2
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instruction set. The list of implemented opcodes is shown below, along with
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the list of opcodes that have not been implemented yet. Spinsim runs in the P1
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mode by default. It can be set to run in the P2 mode with the -t parameter.
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In the P2 mode, spinsim will load a P2 OBJ file into hub RAM, and start cog 0
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with the code located at $E00. A simulated serial port is supported by using
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the -b option. The default baud rate is 115,200, but other rates can be used
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by specifying it with -b, such as -b9600. The serial port uses pin 31 and 30,
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just like with P1.
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Spinsim is built using the Makefile, and typing make. I have successfully
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built and run it under Cygwin and Ubuntu Linux.
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The sample program, pfth.spin can be run by building it with the PNut P2
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assembler. PNut is contained in the Terasic_Prop2_Emulation zip file,
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which can be downloaded from the first post in the "HUB EXEC Update Here"
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thread in the Propeller 2 forum.
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There are two demo programs, which are the pfth Forth interpreter and the
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p1spin Spin interpreter that runs P1 Spin binaries on the P2 processor.
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The pfth program is run under spinsim as follows:
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./spinsim -t -b pfth.obj
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p1spin runs at a baud rate of 57600, so it is run as follows:
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./spinsim -t -b57600 p1spin.obj
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Spinsim supports execution from cog memory and hub execution, but it does not
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support multi-tasking. Only the core processor is supported, and none of the
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counters, video hardware or cordic hardware is simulated. Support for multi-
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tasking, peripheral hardware and cordic instructions will be added later.
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Spinsim contains a simple debugger, which is enabled with the -d command-line
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option. The debugger prints the prompt "DEBUG>" to indicate that it is ready
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to accept a command. The "help" command will print the following:
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Debug Commands
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help - Print command list
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exit - Exit spinsim
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step - Run one cycle
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stepx - Run next executed instruction
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run - Run continuously
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verbose # - Set verbosity level
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reboot - Reboot the Prop
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setbr cog addr - Set breakpoint for cog to addr
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state cog - Dump cog state
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The "step" command will run one cycle, and the "stepx" command will run any
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non-executing cycles until it encounters an instruction that is executed.
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The previous command can be executed again by just pushing the enter key.
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This is useful for stepping where the "step" command is typed once, and
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the enter key can then be used to step again.
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The "run" command will run until a breakpoint is encountered or ^] is typed.
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^] is typed by holding down the control key and pressing the "]" key.
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While running, spinsim will print out the results of each cycle as
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controlled by the verbosity level, which is set by the "verbose" command.
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The verbosity level can also be set with the command-line parameter "-v#".
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The verbosity levels are as follows:
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0 - Disable printing
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1 - Print only the executed instructions
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2 - Print only the executed instructions, and show the execution results
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3 - Print executed and instruction not executed due to condition code
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4 - Also print instructions invalidated in the pipeline due to jumps
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5 - Also print instructions that include hub and hardware waits
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6 - Also print instructions that include icache waits
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7 - Also print instructions waiting for a pin state
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8 - Print all cycles, including waitcnt waits
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The verbosity level is entered as a hexadecimal number. If the verbosity level
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is entered as a single digit it will apply to all cogs. If more than one digit
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is entered each digit will be used for each cog, starting with cog 0 for the
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right-most digit. As an example, a value of 456 will cause 6 to be used for
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cog 0, 5 for cog 1, and 4 for cog 2. All other cogs will use 0.
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Implemented Opcodes
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-------------------
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abs add addabs addptra addptrb addptrx addptry adds
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addsx addx and andn augd augs bingry blmask
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call calla callad callb callbd calld callx callxd
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cally callyd chkptrx chkptry clkset clracca clraccb clraccs
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clrb clrp cmp cmpcnt cmps cmpsub cmpsx cmpx
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cogid coginit cognew cogstop dcachex decd decds decmod
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decod2 decod3 decod4 decod5 div32 div32u div64 div64d
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div64u djnz djnzd djz djzd encod fixinda fixindb
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fixindx frac getacah getacal getacbh getacbl getbyte getcnt
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getdivq getdivr getmulh getmull getnib getnp getp getptra
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getptrb getptrx getptry getsqrt getword icachen icachep icachex
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ijnz ijnzd ijz ijzd incd incds incmod isob
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jmp jmpd jmpsw jmpswd jnp jnpd jnz jnzd
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jp jpd jz jzd locbase locbyte lockclr locknew
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lockret lockset loclong locptra locptrb locword maca macb
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max maxs mergew min mins mov mul mul32
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mul32u muxc muxnc muxnz muxz neg negc negnc
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negnz negz not notb notp offp onecnt or
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pop popzc push pushzc rcl rcr rdaux rdauxr
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rdbyte rdbytec rdlong rdlongc rdwide rdwidec rdword rdwordc
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repd reps ret reta retad retb retbd retd
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retx retxd rety retyd rev rol ror sar
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saracca saraccb saraccs setacca setaccb setb setbc setbnc
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setbnz setbyte setbz setd seti setindb setindx setnib
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setp setpc setpnc setpnz setptra setptrb setptrx setptry
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setpz sets setwide setwidz setword setzc seussf seussr
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shl shr splitw sqrt32 sqrt64 sub subabs subcnt
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subptra subptrb subptrx subptry subr subs subsx subx
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sumc sumnc sumnz sumz test testn wait waitcnt
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waitpeq waitpne wraux wrauxr wrbyte wrlong wrwide wrword
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xor zercnt
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Opcodes Not Implemented
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-----------------------
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addphsa addphsb addphss addpix bcdbin binbcd blnpix capctra
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capctrb capctrs cfgdac0 cfgdac1 cfgdac2 cfgdac3 cfgdacs cfgpins
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cmpr decpat eswap4 eswap8 getcntx getcosa getcosb getlfsr
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getphsa getphsb getphza getphzb getpix getqx getqy getqz
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getsina getsinb grybin incpat jmplist jmptask locinst mergeb
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mixpix movbyts mulpix packrgb passcnt polctra polctrb polvid
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qartan qexp qlog qrotate qsincos rolbyte rolnib rolword
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scl serina serinb serouta seroutb setbyts setctra setctrb
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setctrs setdac0 setdac1 setdac2 setdac3 setdacs setfrqa setfrqb
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setfrqs setmap setmix setphsa setphsb setphss setpix setpixa
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setpixb setpixg setpixr setpixu setpixv setpixw setpixz setpora
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setporb setporc setpord setqi setqz setrace setsera setserb
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settask setvid setvidi setvidq setvidy setwava setwavb setwavs
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setwrds setx setxch setxft splitb subphsa subphsb subphss
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synctra synctrb taskid testb unpkrgb waitpf waitpr waitpx
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waitvid
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