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Klapautsiy
PostPosted: Mon Jun 03, 2019 2:16 am 
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Joined: Sun Jun 02, 2019 10:16 pm
Posts: 4
Location: Ukraine
drag code
Arduino 6502 emulator + BASIC interpreter
http://forum.arduino.cc/index.php?topic=193216.0
on ESP32
- compatibility of system images with 6502 Macroassembler & Simulator Michal Kowalski.
- the ability to write-read one or more RAM images in-from the file system onboard ESP32.
- input programs from a text file.
- optional: output to LCD1602 (just because I have it).

* bye - statement of intent and testing capabilities.
** and I do not speak English.

https://github.com/Klapautsiy/6502_EhBA ... 32_Arduino

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Klapautsiy
PostPosted: Mon Jun 03, 2019 2:35 am 
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I looked at how EhBASIC is located in memory and decided to slightly move to increase the available user RAM - I did this:
Code:
shift to free up RAM

IO_AREA = $F000 -> $FF00 ; set I/O area for this monitor

Ram_top = $C000 -> $D600 ; end of user RAM+1 (set as needed, should be page aligned)
*= $C000 -> $D600 ; This start can be changed to suit your system

user RAM: ($D600 - 1) - $0300 = 54015 bytes

question: is it correct?
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BigEd
PostPosted: Mon Jun 03, 2019 1:34 pm 
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(Welcome, and thanks for sharing your ESP32 project - a very interesting device! I can't help with your question, but I think you must be right or very nearly right.)
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Klapautsiy
PostPosted: Mon Jun 03, 2019 7:06 pm 
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BigEd wrote:
(Welcome, and thanks for sharing your ESP32 project - a very interesting device! I can't help with your question, but I think you must be right or very nearly right.)

thanks.
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Klapautsiy
PostPosted: Tue Jun 04, 2019 6:08 pm 
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cosmetic changes in the code.
https://github.com/Klapautsiy/6502_EhBA ... 32_Arduino

*on the issue:
Code:
IO_AREA = $ F000 -> $ FF00
Ram_top = $ C000 -> $ D600

continue to torment vague doubts
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