Peter Evans
f69454c965
Some soft switches now require consecutive reads
...
To allow this to work, we had to allow the CPU struct to record what the
last opcode/operand/address were, although in truth we only needed the
last address.
2018-01-12 14:49:27 -06:00
Peter Evans
7d6886a3a8
Change last_addr field to eff_addr
2018-01-12 13:57:48 -06:00
Peter Evans
9564f86a57
Remove flash_memory function
2018-01-11 21:57:52 -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
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
8898c3e59d
Use macros to define segment read/write map functions
2018-01-10 20:12:48 -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
fcba14f91b
Add set16 function
2018-01-10 16:43:14 -06:00
Peter Evans
a785eb5665
Remove next_byte, read_byte; remove opcode from execute
...
The execute function should just work from the PC register. It might
seem to be easier to test by passing an arbitrary opcode into the
function, but because so much of the chip's execution is
context-sensitive (that is, it expects PC to be pointing at the opcode,
to have its operand in front of it, etc.), passing an arbitrary opcode
is not really reflective of what needs to be in place for the function
to work correctly.
2018-01-09 20:56:11 -06:00
Peter Evans
0e0244162f
Change objstore structure to contain all peripheral ROM
2018-01-09 15:56:21 -06:00
Peter Evans
01174b63dd
The data in objstore_data was not in the correct order.
...
See also the change in tools/store-data; the system rom was first, when
the disk2 rom should have been first.
2018-01-08 16:19:41 -06:00
Peter Evans
b2add9c3de
Move vm_area logic into its own file
2018-01-07 20:05:02 -06:00
Peter Evans
95e57a8e19
Add get_map_machine function.
...
Mostly useless except for testing.
2018-01-07 20:00:09 -06:00
Peter Evans
ba47de0e4b
Add objstore_clear(), tests for objstore
2018-01-07 16:30:33 -06:00
Peter Evans
888eb25797
Refactor a bit for easier testing; add log_stream()
2018-01-07 15:05:20 -06:00
Peter Evans
665f7de37c
Rename apple2dd_ to apple2_dd_
...
Except for the struct object (apple2dd).
2018-01-07 13:44:07 -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
70516a7f91
Add function to return 16-bit value from a segment address
2018-01-05 16:14:51 -06:00
Peter Evans
1de1e7788a
Rename status flags to MOS_
2018-01-05 14:18:39 -06:00
Peter Evans
171ff62551
Change create to use objstore vm_8bit data
2018-01-03 21:50:30 -06:00
Peter Evans
06d37d24d7
Allow us to call objstore_init more than once.
...
This also separates some code into objstore_ready().
2018-01-03 21:49:26 -06:00
Peter Evans
90d6c637c5
Add function to copy a buffer into a segment
2018-01-03 21:10:25 -06:00
Peter Evans
4d07bd7640
Add objstore code, tests
2018-01-03 20:51:20 -06:00
Peter Evans
fd4b135d5a
Add compiled object store data
2018-01-03 20:49:52 -06:00
Peter Evans
6963883a60
Define the size of the bitmap font for apple2
2018-01-03 20:48:16 -06:00
Peter Evans
86dad129b6
Let us fread into a segment offset
2018-01-03 15:16:30 -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
09bb474008
Missing param for mach on read/write_bank
2018-01-03 01:00:31 -06:00
Peter Evans
ee7b5f66b0
Add support for a map machine pointer
...
To be sent to the read/write functions that are implemented by said
machine.
2018-01-02 21:11:43 -06:00
Peter Evans
73f7d8f63a
Actually map memory when we create an apple2
2018-01-02 16:30:21 -06:00
Peter Evans
e967e9a5c7
Add the aforementioned read/write sig changes
...
oops
2018-01-02 16:26:11 -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
a2b4fe1466
Write an fread function for segments; use in apple2.dd
2017-12-31 20:28:11 -06:00
Peter Evans
f70f21789b
Add flash memory, disassemble options
2017-12-31 15:50:59 -06:00
Peter Evans
ead5f28e79
Refactor to use cpu, not literal segments
2017-12-30 23:02:30 -06:00
Peter Evans
b42d5370aa
Small bug in the jump label code for IND
...
This also required a rethink on some core functions which now needed to
know about the memory segment; and further changes in the unit-testing
code on the disassembly suite was also necessary.
2017-12-30 22:50:23 -06:00
Peter Evans
7e142e2736
Properly handle indirect addresses
2017-12-30 21:48:16 -06:00
Peter Evans
26529f77ab
Implement jump table, labels in code
2017-12-29 17:08:25 -06:00
Peter Evans
927d03ebbe
Add scan function (rename original scan -> opcode); test
2017-12-29 15:31:05 -06:00
Peter Evans
f98e2f65ee
Add disassembly scan function, tests
2017-12-28 23:47:36 -06:00
Peter Evans
1942a75d9e
More documentation; remove DEFWIDTH/DEFHEIGHT
2017-12-27 17:14:54 -06:00
Peter Evans
6a230341e1
Make vm_area_set be an inline function.
...
Gets most of the benefits of being a macro, but also gains type safety
(which macros do not have).
2017-12-27 17:10:51 -06:00
Peter Evans
30223e0bca
Remove screen area field; document area fields
2017-12-27 16:59:56 -06:00
Peter Evans
27f91ec00f
Use vm_area with bitfont_offset
...
This should further standardize on vm_area.
2017-12-27 16:47:26 -06:00
Peter Evans
efb8f04555
Use vm_area for draw_rect.
...
This simplifies and to some degree normalizes the way we reference areas
in the vm subsystem.
2017-12-27 16:42:30 -06:00
Peter Evans
c7b830bb4a
Switch references from SDL_Rect to vm_area
...
We still use SDL_Rect internally, but we want to abstract the use of it
in our API. The only thing the rest of the app should care about is the
vm_area struct.
2017-12-27 16:31:02 -06:00
