1541ultimate
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GideonZ
TapeCart isn't working
TapeCart isn't working on Ultimate 64
Well, this is not a recent regression. It's not working for a longer time.
This is just an issue to track it.
It's a bit of a choice. It's either: a) pass the 6510 PIO compliance test of Vice test suite, or b) let peripherals like TapeCart work.
Maybe it should be configurable.
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It's a bit of a choice. It's either: a) pass the 6510 PIO compliance test of Vice test suite, or b) let peripherals like TapeCart work. Maybe it should be configurable.
Good idea. At least until there's a better solution.
Unfortunately, there is not really a better solution. You see, the PIO test in the test suite expects some capacitance on the I/O pin. So when the pin is set to input, the value should linger there for 'x' time. However, it is unknown whether an external device drives the pin in the mean time. So in order to really fix it, one would have to add a small capacitor and resistor to the I/O pin on the FPGA and then pass the external signal through. Right now, the capacitance emulator is attached to the input, not the external signal.
It's a bit of a choice. It's either: a) pass the 6510 PIO compliance test of Vice test suite, or b) let peripherals like TapeCart work.
I don't agree. Tapecart works fine on real C64s (that pass those tests) afterall :)
This is not something to agree / disagree on. It is a consequence of how the hardware works, not something that can be fixed in the firmware. In this case, the preference was to have the vice test pass, but that is obviously the wrong choice.
Well, when the VICE test does not pass - you will see random (mostly older) software not working, because it relies on those things.
Any news on this issue? Would love to have the setting to enable the tapecart support on the tape port, or even better support .tcrt files with U64. Lots of tapecart releases coming out lately.
