Hello,
Is there somewhere a piece of asm code to detect which slot the DiskII is ? (working for 6502)
thanks
Vincent
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The Apple II+ Autostart Monitor ROM contains such code, at the entrypoint "PWRUP" $FAA6.
further to robespierre's reply, the listing for the II+ Monitor ROM can be found here:
https://6502disassembly.com/a2-rom/AutoF8ROM.html
OK thank you, it is working like a charm
Now I am looking for a routine to move the arm the DiskII by 1 logical track
Seek function does not exist in prodos
Beneath prodos is providing a piece of code but I do not want to recalibrate and going to track 0
Do someone has this simple routine ?
Thanks
Vincent
You already have "Beneath Apple ProDOS". Turn to page A-8 and refer to the routine called "ARMOVE".
The RWTS interface of DOS 3.3 does provide a SEEK command that can be called by assembling an appropriate I/O control block.