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Kelvin Sherlock 04113c4725 Rom 1 _InstallCDA call clobbers some direct page locations.

This is fixed in ROM 3 (or via the TS patches if you boot GS/OS).
Workaround it by switching to DPAGE 0.

Also, allocate memory (since I originally thought that might be relevant).

2022-01-30 15:50:54 -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

Rom 1 _InstallCDA call clobbers some direct page locations.

2022-01-30 15:50:54 -05:00

vt100.csi.S

add DECREQTPARM support, fix a bug with DA/Device attributes response.

2022-01-29 11:23:41 -05:00

vt100.ctrl.S

print the cancel character for ^X and ^Z.

2022-01-17 13:13:07 -05:00

vt100.esc.S

saving the cursor also saves the SGR

2022-01-29 10:43:09 -05:00

vt100.key.S

to make life easier for emacs, backspace will send $7f instead of $08.

2022-01-29 15:43:08 -05:00

vt100.link.S

clean up link file a bit.

2021-10-24 21:47:29 -04:00

vt100.main.S

Rom 1 _InstallCDA call clobbers some direct page locations.

2022-01-30 15:50:54 -05:00

vt100.modem.S

$7f (delete) character is a null char. drop it (and $00) when checking the read queue.

2022-01-28 23:21:13 -05:00

vt100.S

adding everything in progress, regardless of state.

2021-09-04 17:52:35 -04:00

vt100.screen.S

auto-wrap wasn't advancing the cursor after wrapping.

2022-01-29 11:56:15 -05:00

vt100.tabs.S

tab/keypad fixes

2021-09-21 23:40:22 -04:00

vt100.vt52.S

2021-10-24 20:13:06 -04:00

vt.equ.S

Rom 1 _InstallCDA call clobbers some direct page locations.

2022-01-30 15:50:54 -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