Peter Evans
578e0b291c
Allow us to switch main/aux; write bank switch mappers
2018-01-11 19:52:13 -06:00
Peter Evans
9d2f9b6f60
Refactor to remove ram2
...
Both main and auxiliary memory need to keep an extra 4k of memory that
is bank-switchable, so we have changed to store that memory literally
within the main and aux segments.
2018-01-11 13:19:17 -06:00
Peter Evans
8d9b48912e
Add memory injection to 6502; main memory in apple2
...
Note that memory _is_ now managed in apple2, and _not_ in mos6502.
2018-01-10 21:28:05 -06:00
Peter Evans
04854d903c
Add aux memory field
2018-01-10 20:36:44 -06:00
Peter Evans
3db536a83d
Change memory_mode -> bank_switch
...
This also changes the concept of the field; bank_switch is a collection
of bit flags now.
2018-01-10 19:59:33 -06:00
Peter Evans
538b5ddaa0
Add address for reset vector, applesoft, powerup
2018-01-10 16:47:45 -06:00
Peter Evans
8ad1311536
Add set_memory function
2018-01-06 21:37:15 -06:00
Peter Evans
610068cb8b
Add missing decl for apple2_reset()
2018-01-05 16:20:13 -06:00
Peter Evans
6963883a60
Define the size of the bitmap font for apple2
2018-01-03 20:48:16 -06:00
Peter Evans
e7a404508e
Add init functions for disk2, sys rom
...
Also move the defines for bank offset, rom size, etc. into apple2.mem.h
which makes a little more sense.
2018-01-03 15:07:19 -06:00
Peter Evans
834959c10a
Add rom, ram2 bank memory; modify read/write sig
...
The signature for read/write map functions now accepts a void pointer so
that we can pass in the machine that those functions may need to know
about. This is a bit hairy, but allows us to avoid the need for a
yet-uglier global variable.
2018-01-02 16:24:51 -06:00
Peter Evans
5fbd921d83
Reorganize
2017-12-26 16:39:32 -06:00
Peter Evans
f50d599545
Beginnings of lo-res graphics
2017-12-24 15:07:24 -06:00
Peter Evans
979ca65f43
Add bitmap font to apple2, remove rectangle draw
2017-12-21 23:33:04 -06:00
Peter Evans
adac6346e8
Add color mode, text video modes
2017-12-21 11:52:56 -06:00
Peter Evans
23e113e72a
Add video mode switcher to handle logical sizes
2017-12-20 21:52:28 -06:00
Peter Evans
f55b608bee
Move screen run logic into apple run_loop and create
2017-12-20 20:45:26 -06:00
Peter Evans
294fab76aa
Add boot function; modify main to use apple2 boot
2017-12-15 22:22:40 -06:00
Peter Evans
98f70e0a9a
Add functions for pressing/releasing keys
2017-12-06 15:21:39 -06:00
Peter Evans
0e02fb8a1a
Add struct, initial create function for apple2
2017-12-06 14:36:14 -06:00
