Email and Usenet suite for the Apple //e or GS with Uthernet-II ethernet card
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Oliver Schmidt 39f83b7709 Allow Telnet65 to send ASCII code 0 - on the Apple II.
Chris made me aware that ASCII code 0 actually is a valid character (usually entered as Ctrl-Space or Ctrl-@) and that it is actually used (i.e. by EMACS).

The Apple II allows to natively enter the ASCII code 0 via Ctrl-@. However so far get_key_if_available returned 0 in accumulator to signal that no key was pressed. In order to allow the Apple II get_key_if_available to return the ASCII code 0 in the accumulator I changed it to use the carry flag to signal that no key was pressed.

Because get_key_if_available needs of course to behave the same on all targets I changed the other implementations to use the carry flag too.

Unfortunately I don't know enough about input capabilities of the C64 to decide on how to best get Telnet65 to send ASCII code 0 there.
2017-08-09 21:27:28 +02:00
apps Allow Telnet65 to send ASCII code 0 - on the Apple II. 2017-08-09 21:27:28 +02:00
drivers Allow Telnet65 to send ASCII code 0 - on the Apple II. 2017-08-09 21:27:28 +02:00
inc Generalized Apple II slot setting. 2017-06-04 00:10:36 +02:00
ip65 Added Telnet65 app. 2017-05-19 00:12:42 +02:00
test Added VT100 test. 2017-05-19 00:17:38 +02:00
.gitignore Don't show dos.sys & dup.sys. 2015-08-28 20:29:43 +02:00
CONTRIBUTORS.txt Updated contributors. 2014-04-28 18:57:13 +02:00
LICENSE.txt Added text files from doc directory. 2013-12-14 00:27:32 +01:00