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Commit Graph

7 Commits

Author SHA1 Message Date
Oliver Schmidt
2c975d3642 Create static drivers directly from source files.
Up to now static drivers were created via co65 from dynamic drivers. However there was an issue with that approach:

The dynamic drivers are "o65 simple files" which obligates that they start with the 'code' segment. However dynamic drivers need to start with the module header - which is written to. For dynamic drivers this isn't more than a conceptual issue because they are always contain a 'data' segment and may therefore only be loaded into writable memory.

However when dynamic drivers are converted to static drivers using co65 then that issue becomes a real problem as then the 'code' segment may end up in non-writable memory - and thus writing to the module header fails.

Instead of changing the way dynamic drivers work I opted to rather make static driver creation totally independent from dynamic drivers. This allows to place the module header in the 'data' segment (see 'module.mac').
2014-06-04 23:50:18 +02:00
Oliver Schmidt
d6c3bd29ac Renamed JUMPTABLE and cleaned up module.cfg.
This change was suppsed to fix the issue that the former JUMPTABLE is merked as 'ro' while it is actually written to in several scenarios. When drivers are converted using co65 and then compiled into ROMs the JUMPTABLE isn't copied to RAM and therefore the write operations in question fail.

However unfortunately I didn't succeed in changing that :-( Just setting the former JUMPTABLE to 'rw' broke the drivers. So I placed the DATA segment directly after the former JUMPTABLE segment. This made the drivers converted with co65 work again - obviously after changing libsrc/Makefile:235 from '--code-label' to '--data-label'. But the actual dynamic drivers still didn't work as the former JUMPTABLE wasn't placed as the beginning of the loaded file anymore. That effect could be changed by exchanging src/ld65/o65.c:1391 with src/ld65/o65.c:1394 but doing so broke the drivers again :-((
2014-05-01 21:44:39 +02:00
Christian Groessler
012268b8e8 Adapt to new mouse driver interface ('prep' and 'draw') 2014-01-18 00:11:18 +01:00
Christian Groessler
3baf01f531 Always print the mouse cursor, even if coordinates haven't changed.
This makes sure that the cursor is always visible, even if the program
has written text to the screen (only valid for non-P/M mouse callbacks).
2014-01-14 14:03:06 +01:00
Christian Groessler
a3814da96f add comment 2014-01-11 01:37:49 +01:00
Christian Groessler
f83c77bace When disabling interrupts, restore original interrupt flag afterwards. 2014-01-04 20:33:25 +01:00
Christian Groessler
a5dfce7c41 Add "joystick mouse" driver and default mouse callback routine (not
using P/M graphics).
2014-01-04 20:33:24 +01:00