Collection of assembler applications. Many tests and library by Krom.
Expanded with the following tests to cover more details of the original PSX hardware:
Timing:
- TimingCPU: test internal CPU performance - normal commands, mul and div
- TimingLoadRAM: test sdram read performance and pipelinging behavior
- TimingStoreRAM: test sdram write performance and writefifo behavior
- TimingLoadReg: test read performance from different busses
- TimingStoreReg: test write performance to different busses
- TimingGPUSTAT_Vsync240p: test GPUSTAT behavior starting with vsync -> timing measured in div/8 clk cycles and line count
- TimingGPUSTAT_Vsync480i: test GPUSTAT behavior starting with vsync -> timing measured in div/8 clk cycles
Timer:
- TimerCalib: test resetting timer and reading it for calibration. Also TMR2 in Div8 mode and wraparound at 0xFFFF
- TimerWrap: test wraparounds at different target values
- TimerSet: Test various combinations of writing current, target and reset
- TimerHBlank: Test cycles per line and Hblank reset point
Bus:
- LoadStoreReg: check 4 byte aligned reads/writes to different busses
- LoadStoreRegUnalign8: check byte reads/writes to different busses with offset 1,2 or 3
- LoadStoreRegUnalign16: check halfword reads/writes to different busses with offset 0 and 2
- Load816Unalign: check readback with bus rotation from different busses
GTE:
- GTETransfer: check all GTE opcodes timing and pipeline behavior
- GTETiming: check execution time of all GTE commands
DMA:
- DMAPARALLEL: testing DMA and CPU running in parallel(CPU does not stall when DMA is running unless memory or IO regs are accessed)
- DMACPUStall: testing which actions will stop DMA and CPU running in parallel
- DMAAling: testing DMA speed for different start addresses
- DMATimingToDevice: testing DMA to SPU performance and delays. TODO: should be renamed or contain more devices
- DMAOTCData: check data integrity and speed of different OTC DMA sizes
- DMACD: check speed of different DMA sizes
- DMAGPU: check speed of different DMA sizes
- DMAMDECIN: check speed of different DMA sizes
- DMAMDECOUT: check speed of different DMA sizes
- DMASPU: check speed of different DMA sizes
- DMASPUDELAY: check SPU DMA speed for different memctrl settings
- DMABLOCKGPU: check DMA speed and pausing between blocks in request mode for different block sizes and block counts
- DMALINKEDLIST: check DMA speed and pausing between blocks in linked list mode for different block sizes and list lengths
- DMAWrap: check if data is written to RAM when wrapping around 2/8MByte address borders -> screenshot attached to compare against HW
Pipeline:
- PipelineInternelRegs: testing write pipelining and write queue using writes and (stalling) reads to Timer registers
- PipelineRAMwrite: testing write pipelining and write queue using writes and Main RAM
- PipelineRAMread: testing timing of reads from Main RAM
- PipelineSPU: testing write pipelining and write queue using writes and (stalling) reads to SPU registers
- PipelineCD: testing write pipelining and write queue using writes and (stalling) reads to CD registers
- PipelineCPULoadDelay: testing loaded data for various load and load-after-load situation
- PipelineInstructionCache: testing cache fetch timing from aligned and unaligned addresses
- PipelineInstructionNoCache: testing execution timing without instruction cache and combination with parallel store/load
- PipelineInstructionBIOS: testing execution timing with cached and uncached BIOS instruction (tested against 7502)
ExtBUS:
- ExtBusBusWidth: testing timing using different width
- ExtBusDelay: testing timing using different read/write delays
- ExtBusFloatRelease: testing timing with FloatRelease on/off
- ExtBusHold: testing timing with Hold on/off
- ExtBusPreStrobe: testing timing with Pre-Strobe on/off
- ExtBusRecovery: testing timing Recovery on/off
JOY:
- Joypad: tests data connection and latency/timing for any pad connected to port 1
Notes:
- most timing tests will fail if the basic TimerCalib tests are not pass
- Everything tested against a 7502 PAL with PSIO. For tests that depend on video timing, slightly different values are expected on NTSC models
Original readme from Krom
PSX Bare Metal Code by krom (Peter Lemon).
All code compiles out of box with the Armips assembler by Kingcom.
https://github.com/Kingcom/armips/
http://buildbot.orphis.net/armips/
I have included binaries & executables of all the demos.
Special thanks to the Hitmen demo group, who with their asm sources, helped me get into PSX Coding =D
http://hitmen.c02.at/html/psx_sources.html
Also I'd like to thank ARM9, who made the bin2exe.py file, to convert my PSX binaries into PSX exectuables.
https://github.com/ARM9/psxdev/blob/master/libpsx/tools/bin2exe.py
Please check out NO$PSX, a PSX emulator/debugger by Martin Korth:
http://problemkaputt.de/psx.htm
Also MAME has a great PSX emulator/debugger by smf:
https://www.mamedev.org/
Howto Compile:
All the code compiles into a single binary & executable (NAME.EXE) file.
Using Armips Run: make.bat
Howto Run:
I only test with a real PSX.
You can also use PSX emulators like NO$PSX which can load PSX executables directly, & MAME using this command:
mame pse -quik NAME.EXE