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➜ Electronics
➜ G-Pascal
➜ Code before Ben Eater version?
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Code before Ben Eater version?
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| Posted by
| Robbbates
(6 posts) Bio
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| Date
| Wed 01 May 2024 03:03 AM (UTC) |
| Message
| Would you happen to have the code before you implemented the serial with VIA? I'd like to implement a version using the UART, but there seems to be a lot of things changed in many places in the code, specifically using the serial_in_byte_received related function. It's hard to dig out what's trying to be done in each instance. I'd like to roll it back and then
Robb | | Top |
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| Posted by
| Nick Gammon
Australia (23,122 posts) Bio
Forum Administrator |
| Date
| Reply #1 on Wed 01 May 2024 05:29 AM (UTC) |
| Message
| The original code can be found here: http://www.gammon.com.au/GPascal/source/
If you look at the code here:
https://github.com/nickgammon/G-Pascal/blob/3292b3938a9c83d360fb26d42783fa3207455a16/src/hardware.inc#L212
You can see the minor changes that are made for the emulator, which I used for a lot of testing.
You basically need to replace:
- CHRIN - gets a character from serial (blocks)
- write_char - writes a character to serial
- GETIN - same as CHRIN
- serial_available - (non-blocking) see if a character is available from serial
That's it!
In the emulator CHRIN was slightly different to GETIN. CHRIN read an entire line (it made typing a line of text easier) whereas GETIN read a single character.
Look for the ".if EMULATOR" directive. |
- Nick Gammon
www.gammon.com.au, www.mushclient.com | | Top |
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