Peter Evans
d4bf5da480
Draw text in 40 column mode
2018-01-18 16:21:25 -06:00
Peter Evans
c0ce4ec2f1
Set strobe to false by default
...
Otherwise we could get garbage values, and that was flagging some tests
as failed at random times
2018-01-17 15:16:25 -06:00
Peter Evans
6670df930b
Remove unnecessary functions and tests
2018-01-17 14:02:37 -06:00
Peter Evans
2c39120098
Rename video_mode -> display_mode
...
This also changes the _kind_ of field from an incrementally enumerated
one to a collection of bit flags.
2018-01-16 16:13:50 -06:00
Peter Evans
2db5c791ba
Remove peripheral rom init
2018-01-15 17:42:27 -06:00
Peter Evans
c953616a71
Finish refactor to separate bank_switch and memory_mode
...
There is one failing test, which I expect to fail at this point; that's
because we need to write a read/write map function for the stack and
zero page so that they use aux memory when BANK_ALTZP is on, and main
memory when not.
2018-01-12 21:04:21 -06:00
Peter Evans
ceccacfbc8
Rework bank switch and memory mode into their own fields.
...
This is to better define and respect the various modes that you can have
in Apple II memory access. This is a work in progress at the moment.
2018-01-12 16:21:49 -06:00
Peter Evans
578e0b291c
Allow us to switch main/aux; write bank switch mappers
2018-01-11 19:52:13 -06:00
Peter Evans
a17ad0596b
Initialize cpu as NULL
...
Static analysis in clang caught this; we might try to free memory from a
garbage pointer value if the main segment malloc fails.
2018-01-11 13:25:22 -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
fe0ed815a9
Move bank switch set up for the mem init functions.
...
This also changes bank_switch to mirror at boot what the reset function
does later on. Without doing so, our init memory routines will fail.
2018-01-10 21:48:55 -06:00
Peter Evans
24e6e0fd25
Properly free main/aux memory
2018-01-10 21:29:25 -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
343d870399
Add missing mach parameter to set_video/set_memory
2018-01-10 16:59:02 -06:00
Peter Evans
aa486656b3
Set the reset vector to the applesoft interpreter address
2018-01-10 16:47:18 -06:00
Peter Evans
6af0ae85a4
Also force bank switch mode back to ROM
2018-01-10 15:16:12 -06:00
Peter Evans
c9188a288d
Reset should change the video mode to 40 column text
2018-01-10 15:14:07 -06:00
Peter Evans
e3ab043aee
We no longer need to pass the opcode here
2018-01-09 20:58:53 -06:00
Peter Evans
8201117223
Change init routine to use peripheral function
2018-01-09 15:56:48 -06:00
Peter Evans
7c899122ad
We should advance to the next byte in execution
2018-01-08 21:15:56 -06:00
Peter Evans
5da65e0a9e
Change apple2dd -> apple2_dd
2018-01-07 14:46:54 -06:00
Peter Evans
8ad1311536
Add set_memory function
2018-01-06 21:37:15 -06:00
Peter Evans
d9527db033
Retrieve the 16-bit PC address.
...
This fixes a bug where we only got an 8-bit address from $FFFC and
ignored the LSB at $FFFD.
2018-01-05 16:15:13 -06:00
Peter Evans
c6799db689
Separate reset logic from boot function
2018-01-05 16:04:01 -06:00
Peter Evans
d5b6205713
Actually execute some opcodes
2018-01-05 14:55:33 -06:00
Peter Evans
fd8f36b34e
We need to use the mach cpu
2018-01-05 14:19:13 -06:00
Peter Evans
2da613f7aa
Provisional state upon reboot
2018-01-04 20:09:53 -06:00
Peter Evans
565dd1b34b
Make sure the object store got built
2018-01-03 21:50:01 -06:00
Peter Evans
fac6b4f574
Initialize system and disk2 rom
2018-01-03 15:20:48 -06:00
Peter Evans
9a1e51fec3
We need to pass the machine, not memory
2018-01-02 23:49:29 -06:00
Peter Evans
73f7d8f63a
Actually map memory when we create an apple2
2018-01-02 16:30:21 -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
78aab1bd13
Fix potential memory leaks in create()
2018-01-01 17:11:03 -06:00
Peter Evans
f70f21789b
Add flash memory, disassemble options
2017-12-31 15:50:59 -06:00
Peter Evans
f8ce9ae1d1
Documentation
2017-12-26 17:13:34 -06:00
Peter Evans
f5af03786d
Reorganize
2017-12-26 16:39:23 -06:00
Peter Evans
f50d599545
Beginnings of lo-res graphics
2017-12-24 15:07:24 -06:00
Peter Evans
29652b2368
Implement draw text functionality
2017-12-22 15:48:48 -06:00
Peter Evans
b2c1bd9e6d
Hello world, in rendered text; use nearest pixel sampling
...
The scale change removes some blurriness that we saw when copying pixels
from the bitmap font into the renderer.
2017-12-22 12:56:22 -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
87b67216b0
Default to lo-res mode
2017-12-20 21:54:54 -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
0336fe7366
Documentation for files
2017-12-08 22:12:31 -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
