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PETTERM 0.4.0
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@ChartreuseK ChartreuseK released this 05 Aug 04:27
· 108 commits to master since this release
v0.4.0
7e8101e

A much desired improvement, PETTERM can now handle 600 and 1200 baud.

Usage

  • Off/Rvs key acts as a Ctrl key.
  • Clr/Home opens up the PETTERM menu for changing baudrate and character set modes
  • PET cursor keys work as expected
  • Inst/Del is a backspace key
  • Terminal emulates a limited set of ANSI escape codes which should work for most simple uses.

Hardware changes required

A connection between pin C and B of the user-port is required. Adapters meant for VIC-20 or C64 use should already have this present.
This change is required for all baud rates in this version.

Features

  • Can work with a 40 or 80 column PETs with either the graphics or business keyboard.
  • Can be loaded from tape or disk.
  • Works on all versions of BASIC including the oldest PET 2001s with BASIC 1.
  • Can work with as low as 4kB of RAM.
  • Requires only a simple two wire serial interface.

Rx (to the PET) should be connected to pin C AND pin B of the user-port.
Tx (from the PET) should be connected to pin M of the user-port.
Don't forget the ground connection to either pin N or Pin 1

Files:

  • petterm40G - 40 column PETs with graphics keyboard (eg 2001, some 4032)
  • petterm40B - 40 column PETs with buisness keyboard
  • petterm80G - 80 column PETs with graphics keyboard
  • petterm80B - 80 column PETs with buisness keyboard

PRG files are the native programs, can be added to a tape or disk image
TAP files are tape images

Changes from 0.3.1:

  • Re-wrote serial recieve routines to use interrupt triggered start bit
    • Now Requires a jumper between pin B and C on the userport header. This is the same as most VIC-20 and C64 serial adapters so little change should be required
  • Allows for significantly faster serial code with less overhead as we don't have to oversample by 3x anymore
  • 600 and 1200 baud works and appears to be stable
    • 80 column PETs maypossibly have rare issues at 1200 baud if too many newlines are sent in a row due to the time needed to scroll the screen.
  • Significantly optimized screen handling code
  • Fixed keyboard arrow keys bug
  • Improved character rendering, all ASCII characters should look as close to correct as possible.
    • ~ is rendered as an inverted T block drawing character,
    • Backtick as top left backwards L block drawing character
Assets 6
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