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cc65/libsrc/apple2
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Oliver Schmidt 5493c9e7c2
Don't empty the Receive Data Register on filling the Transmit Data Register 
The Receive Data Register and the Transmit Data Register share share a single address. Accessing that address with STA abs,X in order to fill the Transmit Data Register causes a 6502 false read which causes the Receive Data Register to be emptied.

The simplest way to work around that issue - which I chose here - is to move the base address for all ACIA accesses from page $C0 to page $BF. However, that adds an additional cycle to all read accesses. An alternative approach would be to only modify the single line `sta ACIA_DATA,x`.
 		2022-09-08 17:11:30 +02:00
..
emd Create static drivers directly from source files. 2014-06-04 23:50:18 +02:00
extra Resolved conflict and removed adaptation for strpbrk for time being. 2018-05-21 13:30:27 +02:00
joy Streamlined machine detection. 2020-06-15 19:31:18 +02:00
mou remove dangling spaces 2022-04-17 16:06:22 +02:00
ser Don't empty the Receive Data Register on filling the Transmit Data Register 2022-09-08 17:11:30 +02:00
targetutil Moved convert.system from geos-apple to apple2[enh]. 2021-02-17 10:50:22 +01:00
tgi Disable potentially enabled double-width graphics. 2020-05-04 22:23:01 +02:00
_scrsize.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
_sys.s Allow _sys() to call ROM routines. 2016-03-25 21:57:06 +01:00
break.s Adjusted comments to match actual prototypes. 2018-11-06 11:13:23 +01:00
cclear.s Introduced internal gotoxy that pops both parameters. 2016-06-05 14:58:38 +02:00
cgetc.s Support randomize(). 2018-09-08 18:45:20 +02:00
chline.s Made Apple II CONIO more flexible. 2018-08-20 00:30:17 +02:00
close.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
closedir.c Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
clrscr.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
color.s add missing newline to a bunch of files 2022-04-16 19:51:48 +02:00
cout.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
cpeekc.s Implemented some CONIO peek functions. 2020-07-12 22:19:55 +02:00
cputc.s Implemented line wrap. 2018-08-20 00:30:17 +02:00
crt0.s Moved run location of ONCE segment. 2016-03-17 21:07:19 +01:00
curdevice.s Introduced getcurrentdevice() and implemented it for CBM and Apple. 2012-10-21 14:35:17 +00:00
cvline.s Made Apple II CONIO more flexible. 2018-08-20 00:30:17 +02:00
devicedir.s Fixed regression introduced by https://github.com/cc65/cc65/pull/652. 2018-07-26 14:31:17 +02:00
dioclose.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
diocommon.s Just removed some trailing spaces. 2018-09-08 23:14:54 +02:00
dioopen.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
dioread.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
diosectcount.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
diosectsize.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
diowrite.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
dir.h Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
doesclrscr.s Added Apple II version of doesclrscrafterexit(). 2016-06-05 13:01:42 +02:00
dosdetect.s Matched comment to the one in the C header file. 2020-04-02 09:45:11 +02:00
exec.s remove dangling spaces 2022-04-17 16:06:22 +02:00
exehdr.s Switched Apple II output format to AppleSingle. 2018-03-07 23:05:21 +01:00
filedes.inc Cosmetic changes from Oliver Schmidt 2005-04-15 08:27:09 +00:00
filedes.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
filename.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
get_ostype.s Added waitvsync() for the Enhanced Apple //e. 2020-06-18 21:44:57 +02:00
getdevice.s Just a minor comment improvement. 2018-09-02 23:07:26 +02:00
getres.s Use MACHID to check for realtime clock. 2019-09-10 09:49:06 +02:00
gettime.s Adjusted comments to match actual prototypes. 2018-11-06 11:13:23 +01:00
gotoxy.s Introduced internal gotoxy that pops both parameters. 2016-06-05 14:58:38 +02:00
gotoy.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
home.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
initcwd.s Just removed some trailing spaces. 2018-09-08 23:14:54 +02:00
iobuf.s remove dangling spaces 2022-04-17 16:06:22 +02:00
irq.s Made use of recently added Apple scrcode macro. 2016-03-27 18:27:53 +02:00
isdevice.s I wasn't aware that the unit numbers in the ProDOS device list contain device type identifiers in the low nibble. So if we can't use the device list entries as-is we can as well present the high nibble as low nibble to the user thus providing more meaningful device numbers. 2012-10-15 21:59:51 +00:00
joy_stat_stddrv.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
joy_stddrv.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
joyref.s Reflect that the Apple //c supports only one joystick. 2020-06-04 23:24:24 +02:00
kbhit.s Cosmetic changes requested by Oliver Schmidt 2005-03-30 18:17:57 +00:00
libref.s Reflect that the Apple //c supports only one joystick. 2020-06-04 23:24:24 +02:00
lseek.s lseek: Return EINVAL if new position is less than 0 or greater than 2^24 - 1. 2018-08-20 22:24:48 +02:00
mainargs.s Adjusted constructors. 2016-03-16 16:28:32 +01:00
mcbdefault.s remove dangling spaces 2022-04-17 16:06:22 +02:00
mli.inc Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
mli.s Protect random counter against ProDOS. 2018-09-08 23:29:59 +02:00
mouse_stat_stddrv.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
mouse_stddrv.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
open.s Renamed INITBSS to INIT and INIT to ONCE. 2016-03-06 21:27:19 +01:00
opendir.c remove dangling spaces 2022-04-17 16:06:22 +02:00
oserrlist.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
oserror.s Implement exec() for Atari XDOS. 2016-06-13 20:40:01 +02:00
randomize.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
rdkey.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
read.s Improved device I/O under DOS 3.3 2020-12-19 19:54:12 +01:00
readdir.c Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
reboot.s Renamed INITBSS to INIT and INIT to ONCE. 2016-03-06 21:27:19 +01:00
revers.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
rewinddir.c Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
rwcommon.s Added "popptr1" which is of common use to save some bytes. 2018-05-20 15:30:18 +02:00
settime.s Use MACHID to check for realtime clock. 2019-09-10 09:49:06 +02:00
syschdir.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
sysmkdir.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
sysremove.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
sysrename.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
sysrmdir.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
sysuname.s New uname function 2003-08-12 17:24:02 +00:00
tgi_colors.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
tgi_stat_stddrv.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
tgi_stddrv.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
videomode.s Made use of 65C02 opcode (thx to polluks). 2020-03-05 14:38:36 +01:00
vtabz.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
waitvsync.s Added waitvsync() for the Enhanced Apple //e. 2020-06-18 21:44:57 +02:00
wherex.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
wherey.s Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
write.s remove dangling spaces 2022-04-17 16:06:22 +02:00