CS/A65 Auxiliary CPU

This test suite contains nine tests that for the auxcpu board:

The tests run in a Caspaer setup, but with Commodore PET ROMs, as described in Roll-Your-Own-Fat40. This way the operating system does not fiddle around with the MMU registers necessary for the test.

• auxcpu1: Tests basic functionality. Loads a program for the auxcpu, and starts it with the "external trigger" functionality. Auxcpu flashes the BIOS board LED and the DRVIO LEDs if the DRVIO board is plugged into the secondary bus of the auxcpu. Does not give control back to the maincpu.
• auxcpu2: Same as auxcpu1, only instead of static RAM from the BIOS board, uses dRAM from the VDC board, to see if the timing is ok there too.
• auxcpu3: blinks the LEDs as well, but after each flash the control is given back to the maincpu that does the actual wait loop until triggering the next flash in the auxcpu.
• auxcpu4: Tests the write protect (WPROT) handling. Maps a page as write protected, and writes to it. The auxcpu prints the fault address on the screen.
• auxcpu4a: Same as auxcpu4, only that the screen memory is mapped using not the MAPRAM, but MAP0 register.
• auxcpu5: Tests the NOEXEC handling. Maps a page as NOEXEC, and jumps to it. The auxcpu prints the fault address on the screen and lets the maincpu return.
• auxcpu6: Tests the "not mapped" handling. Maps a page as not mapped, and reads it. The auxcpu prints the fault address on the screen.
• auxcpu7: Combines NOEXEC, WPROT, and NOTMAPD handling Maps a page as not mapped, no execute, and write protected, and accesses it. The auxcpu prints the fault address on the screen.
• auxcpu8: Tests the trace feature. Enables trace and prints the next five opcode addresses and opcodes on the screen.
• auxcpu9: Same as auxcpu7, only that the auxcpu also triggers an intterupt for the maincpu.