c9c609be1d
Separate CPU core and UI processes
...
This is a first step toward separating the CPU core and UI. The UI program
starts the CPU core as a subprocess and communicates through its standard input
and output. The protocol is deliberately simple at this point. Each bus request
from the core is exactly eight bytes:
+-------------------------+
| cpu cycle counter high |
+-------------------------+
| cpu cycle counter |
+-------------------------+
| cpu cycle counter |
+-------------------------+
| cpu cycle counter low |
+-------------------------+
| 0x00=read / 0x01=write |
+-------------------------+
| address high |
+-------------------------+
| address low |
+-------------------------+
| value (unused for read) |
+-------------------------+
A single-byte response from the UI is required for a read request, and a
response must not be sent for a write request.
The above protocol is expected to change. For example:
- the UI should tell the CPU core which address ranges are of interest
- needs ability to send memory images to the core (both ROM and RAM)
The stream communications is currently buggy because it expects that all eight
bytes will be read when requested (that is, partial reads are not handled). In
practice, this seems to work okay for the moment.
To improve portability, it may be better to communicate over TCP sockets
instead of stdin/stdout.
2011-08-16 12:54:23 +12:00
7c657a8dd8
removed unused import
2011-08-15 09:41:58 -04:00
a2fcbd5238
adjusted speaker sample length to allow for leading edge
2011-08-15 09:37:32 -04:00
fbd213e240
made options...um...optional param to Memory so tests pass
2011-08-15 09:34:49 -04:00
51acc8e156
Merge branch 'master' into options
...
Conflicts:
applepy.py
2011-08-15 09:27:53 -04:00
882e8478f8
Merge pull request #8 from ghewgill/arrowkeys
...
map left/right arrow keys to ^H/^U
2011-08-15 06:18:52 -07:00
8827db4f6a
command line options: --rom, --ram, --quiet
2011-08-15 22:47:16 +12:00
a543112ee9
map left/right arrow keys to ^H/^U
2011-08-15 22:19:03 +12:00
27d7a717dc
add flash attribute to text mode
2011-08-15 21:58:10 +12:00
b9033a459a
moved speaker buffer playing into the Speaker class
2011-08-15 02:30:28 -04:00
4dd414dea8
implemented speaker; not a bad hack :-)
2011-08-15 02:22:58 -04:00
be91422317
refactored memory access so cycle can be passed in
2011-08-15 00:21:20 -04:00
a92dcfecd3
implemented cycle calculation (except for page boundary crossing)
2011-08-14 23:50:34 -04:00
fcb1d585a0
added test_run to run CPU over a fragment of memory with no UI event handling (for automated testings)
2011-08-14 17:21:03 -04:00
bdc7b3a1e2
improved coloured for better whites
2011-08-14 03:52:56 -04:00
96ad7be994
fixed missing self
2011-08-13 09:49:14 -04:00
f3e0cef441
refactored memory so RAM just subclasses ROM, adding write_byte
2011-08-13 09:47:18 -04:00
6b163f1c2d
whitespace nits
2011-08-13 09:43:55 -04:00
4c333ec125
added load_file to RAM
2011-08-13 09:41:45 -04:00
1be14989ca
implemented HIRES colour
2011-08-13 09:11:46 -04:00
5a8bf9a516
use pregenerated character bitmaps for text mode
2011-08-14 00:16:42 +12:00
e37c4dcbcd
added HIRES graphics support based on code from ghewgill: 5aa8ca2caa
2011-08-13 07:52:17 -04:00
8f3b640393
always draw the spaces between scanlines
2011-08-13 07:24:23 -04:00
2f71ca9029
in mixed mode, assume monitor is colour
2011-08-13 07:22:10 -04:00
38736cf243
refactored update_text and update_lores into a single method
2011-08-13 07:06:11 -04:00
9e92bbba97
display full width of characters
2011-08-13 06:37:47 -04:00
588f913eb2
character heights are really 8 not 9
2011-08-13 06:36:21 -04:00
7cc9e8bdad
implemented LORES graphics
2011-08-13 06:33:12 -04:00
4267732d7f
make display optional (for testing)
2011-08-13 04:02:43 -04:00
d11aff5416
Merge branch 'master' into pygame
2011-08-13 04:00:56 -04:00
2e34927e7c
got tests working again after memory refactor
2011-08-13 04:00:40 -04:00
9220ec85db
ported to pygame and added bit-accurate characters
2011-08-13 03:52:07 -04:00
02714dff55
if writing to text screen row group 3 just skip instead of throwing exception
2011-08-07 07:03:50 -04:00
6525a27511
don't treat indices as signed in indexed addressing modes (ht: ghewgill)
2011-08-07 06:42:47 -04:00
4177ae0b25
consistent whitespace
2011-08-07 06:29:15 -04:00
772cdad470
Merge pull request #4 from ghewgill/master
...
add disassembler
2011-08-07 03:22:40 -07:00
c42c5044fc
split memory handling into separate classes for RAM, ROM and Soft Switches
2011-08-07 06:19:49 -04:00
267d0c8e06
add disassembler, enable for dump mode
2011-08-07 21:52:26 +12:00
56e82f7cb6
don't allow writes to ROM area (this caused the ][+ ROM to hang on boot)
2011-08-07 21:31:01 +12:00
c9dcee2f08
fix typos for zero_page_y_mode in instruction dispatch table
2011-08-07 20:30:44 +12:00
1925846c3c
fix dump() function so it works (when uncommented)
2011-08-07 19:32:39 +12:00
dde4a83f85
fix typo in instruction table
2011-08-07 19:10:30 +12:00
e961d7e00d
simplify calculating signed values in adc and sbc
2011-08-07 18:33:42 +12:00
5a8b25b771
only need to allocate 64k of memory
2011-08-07 18:17:24 +12:00
ce179a470f
if curses can't write a character to the screen, just skip it; fixes #1
2011-08-07 01:34:10 -04:00
44099ae4f2
improved implementation of indirect bug across page boundaries including indexed indirects as well
2011-08-07 01:22:48 -04:00
c101868549
fixed error in BVS
2011-08-07 00:39:17 -04:00
36355def33
whitespace nit
2011-08-07 00:37:49 -04:00
f521fba883
properly use 0 and 1 not False and True for flags
2011-08-07 00:30:12 -04:00
777266f8e1
implemented non-accumulator version of ROR
2011-08-07 00:24:25 -04:00
Greg Hewgill
James Tauber