Apple-2gs-SW/itty-bitty-vtty
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OS-free, tool-free, accurate vt100 emulator for the Apple IIgs
52 Commits 2 Branches 6 Tags 149 KiB
Assembly 97.6%
Python 1.7%
Makefile 0.5%
Shell 0.2%
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Kelvin Sherlock 279f424cee cda - improve ssc register display
2021-12-06 20:14:35 -05:00
apple2gs.equ.S at 2.6mhz, 9600baud, I was experiencing lost characters during line scroll or screen clear. To compensate, replace modem polling with asynchronous/interrupt-based code. Up to 256 bytes of modem data can be buffered. 2021-10-24 20:13:06 -04:00
boot.S use the power of external constants to generate a block count. 2021-04-14 22:53:46 -04:00
debug.S bug fixes. 2021-09-25 11:05:06 -04:00
link.S move code to $6000 since $0800 interferes w/ text page 2. 2021-04-04 21:42:52 -04:00
make-vt100.sh clean up link file a bit. 2021-10-24 21:47:29 -04:00
makefile terminal emulator experiments. 2021-04-04 20:22:43 -04:00
modem.s terminal emulator experiments. 2021-04-04 20:22:43 -04:00
README.md Create README.md 2021-10-26 08:16:26 -04:00
scc.s terminal emulator experiments. 2021-04-04 20:22:43 -04:00
screen.S adding everything in progress, regardless of state. 2021-09-04 17:52:35 -04:00
table.py --ctrl, --upper, --lower, --digit flags. 2021-09-19 18:49:52 -04:00
vt52.S tab logic was off by one at the end. 2021-09-08 23:34:27 -04:00
vt100.beep.S typo. 2021-10-23 12:24:36 -04:00
vt100.cda.S cda - improve ssc register display 2021-12-06 20:14:35 -05:00
vt100.csi.S fixed cursor position report 2021-11-28 14:45:03 -05:00
vt100.ctrl.S more vt100 code 2021-09-17 19:50:56 -04:00
vt100.esc.S update cursor save/cursor restore to also save the DECOM settings. tested with vt100 (mame) 2021-11-28 15:46:29 -05:00
vt100.key.S use iigs equates 2021-10-03 16:08:23 -04:00
vt100.link.S clean up link file a bit. 2021-10-24 21:47:29 -04:00
vt100.main.S move direct page so it's accessible to CDA 2021-10-25 13:17:47 -04:00
vt100.modem.S cda - display SCC registers. 2021-12-05 22:47:40 -05:00
vt100.S adding everything in progress, regardless of state. 2021-09-04 17:52:35 -04:00
vt100.screen.S move direct page so it's accessible to CDA 2021-10-25 13:17:47 -04:00
vt100.tabs.S tab/keypad fixes 2021-09-21 23:40:22 -04:00
vt100.vt52.S at 2.6mhz, 9600baud, I was experiencing lost characters during line scroll or screen clear. To compensate, replace modem polling with asynchronous/interrupt-based code. Up to 256 bytes of modem data can be buffered. 2021-10-24 20:13:06 -04:00
vt.equ.S update cursor save/cursor restore to also save the DECOM settings. tested with vt100 (mame) 2021-11-28 15:46:29 -05:00

README.md

itty-bitty-vtty

A vt100 emulator for the Apple IIgs

vt100, modem port, 9600 baud, 8-N-1 (MAME defaults)

A vt100 emulator based on The User Guide. Underspecified behavior is tested with MAME's vt100 emulation.

Unimplemented due to hardware limitations:

  • alternate character sets
  • graphic rendition (except plain/reverse)
  • 132-column mode