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Old 6th Feb 2023, 11:49 pm   #164
Mark1960
Octode
 
Join Date: Mar 2020
Location: Kitchener, Ontario, Canada
Posts: 1,265
Default Re: Yet another MK14 tape interface (ESP32).

Even with expanded memory I was planning to use F000-FFFF as memory mapped IO but as that part of Coolsnaz’s code is on the server it may be worth considering as its not subject to the MK14 memory limit.

I was looking at the possibility of modifying the fastloader to use normal serial protocol, connecting sense B to serial in to detect the start bit. Looks like it removes 5 bytes and adds at least 6. Two bytes to delay from the start bit to the middle of the first data bit, relying on accumulator containing 20 after start bit detected, then four bytes to delay between the centre of each bit. It would be quite a lot slower, but use a standard usb to ttl serial adapter from the pc. There would also need to be a python script on the pc to format the data from the hex file.
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