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Author SHA1 Message Date
Lionel Flandrin
859c602d33 Make the instruction cache ignore the region bits. 
It appears that the tag of the cacheline doesn't keep track of the
region.
 2015-09-15 21:27:22 +02:00
Lionel Flandrin
9ab4174942 Gamepad: schedule interrupt even if it's not active. 
Otherwise we might miss it if the software activates it while the
transaction is pending.
 2015-09-14 18:56:40 +02:00
Lionel Flandrin
7d2827b394 Updated readme now that we have gamepad support 2015-09-12 20:46:40 +02:00
Lionel Flandrin
0f2322df8a Implemented gamepad emulation. 
The timings are tweaked because it seems our emulator is too fast at
this point: the BIOS attempts to start a new request while the
previous one is still in progress. This will have to be fixed later as
we become more accurate.

Only the original digital controller is supported for now.

The frontend supports keyboard and controllers through SDL2 for input.
 2015-09-12 20:34:38 +02:00
Lionel Flandrin
88c132e399 Added README 2015-09-09 22:18:21 +02:00
Lionel Flandrin
3274b4e353 Panic if a game attempts to use the dotclock as timer source 
It's not implemented yet.
 2015-09-02 20:54:59 +02:00
Lionel Flandrin
a26e113a51 Add support for a few GTE registers (CTC2 opcode), reach the BIOS main menu 
* Added a few GPU commands used to draw the BIOS menu in SCPH-1001.
* Added placeholder code for DMA GPU read (returns 0s)
 2015-08-30 17:11:20 +02:00
Lionel Flandrin
79220727b1 Add support for timer "target" interrupt 2015-08-30 17:07:38 +02:00
Lionel Flandrin
dbca7a2025 Ignore writes to the joystick and memory card controller 2015-08-29 21:59:20 +02:00
Lionel Flandrin
227c71f002 Add missing "target_irq" field when reading the timer status register 2015-08-29 00:23:37 +02:00
Lionel Flandrin
7976891a70 Implemented basic CDROM controller support. 
For now I cheat by pretending that the CD tray is open. This way the
BIOS bails out and doesn't attempt to run the game.
 2015-08-24 23:36:32 +02:00
Lionel Flandrin
14db23ccb7 Add temporary check to catch unhandled interrupt configs 2015-08-16 17:13:00 +02:00
Lionel Flandrin
f905862869 Added basic timer support 
Only free-run mode is implemented, no interrupts.

Using the GPU's dotclock or HSync as a timer source is implemented
although it requires further testing.
 2015-08-16 17:09:34 +02:00
Lionel Flandrin
1918e9dc17 Added DMA interrupt 2015-08-04 21:52:50 +02:00
Lionel Flandrin
c44449a08d Interrupt handling code: only GPU VBlank IRQ supported for now. 
IRQ_STATUS and IRQ_MASK are supported, all the CPU code should be
there as well: Interrupt Enable, Interrupt Mask, Interrupt Pending
(including software interrupts, only writing to CAUSE is missing).
 2015-07-23 23:22:19 +02:00
Lionel Flandrin
6de5dad543 Implement basic GPU timings 2015-07-13 19:50:48 +02:00
Lionel Flandrin
3def356091 Improve error handling in OpenGL code 2015-07-03 12:15:08 +02:00
Lionel Flandrin
f5c6f66c63 Allow BIOS selection on the command line. Recommend SCPH1001.BIN. 
Fixes #1 and #2
 2015-07-01 11:17:05 +02:00
Lionel Flandrin
dd90961982 Implement debugger write watchpoints 2015-06-19 23:10:32 +02:00
Lionel Flandrin
f3702f6311 Implement instruction cache 2015-05-27 21:13:36 +02:00
Lionel Flandrin
77d75c976b Don't fetch instructions like data, use a separate path. 
The two paths should be different in order to handle debugging
read/write watchpoints correctly (instruction fetch shouldn't trigger
them). Later on we'll also need different paths to handle the caches
correctly.
 2015-05-25 16:27:11 +02:00
Lionel Flandrin
4ebf7ae877 Debugger: Implement read watchpoints 2015-05-25 16:27:11 +02:00
Lionel Flandrin
c8ec4d62d1 Debugger: Implement breakpoints 2015-05-25 16:27:11 +02:00
Lionel Flandrin
8a5b4d2895 Debugger: Implement "step" 2015-05-25 16:27:11 +02:00
Lionel Flandrin
c962afcdb6 Implement "continue" in the debugger 2015-05-25 16:27:11 +02:00
Lionel Flandrin
137a6de830 Implement debugger memory read 2015-05-25 16:27:11 +02:00
Lionel Flandrin
f48fc15fb8 Refactor interconnect to use a generic load/store implementation 
Instead of having word/halfword/byte implementations for load and
store we have only one generic version. It reduces code duplication
and actually ended up making the code run faster on my computer for
some reason.
 2015-05-25 16:27:09 +02:00
Lionel Flandrin
1a4038c156 Added remote GDB support over TCP 
For now only dumping registers is supported. No memory access or
breakpoints.
 2015-05-25 16:26:15 +02:00
Lionel Flandrin
4de6ac4349 Handle SDL events for cleanly exiting the emulator 2015-05-25 16:26:15 +02:00
Lionel Flandrin
415e1eb067 Implement draw offset in OpenGL renderer 2015-05-25 16:26:15 +02:00
Lionel Flandrin
a3092cf793 Implement basic OpenGL renderer using SDL2 2015-05-25 16:26:15 +02:00
Lionel Flandrin
78138b545d Implement GPU GP1(0x02): Reset Command Buffer 2015-05-25 16:26:15 +02:00
Lionel Flandrin
28d0161119 Implement GPU GP1(0x02): Acknowledge IRQ 2015-05-25 16:26:15 +02:00
Lionel Flandrin
2821bb8069 Implemented placeholder for GP0(0x2C): gp0_quad_texture_blend_opaque 2015-05-25 16:26:15 +02:00
Lionel Flandrin
666d70cce2 Implemented placeholder for GP0(0x30): gp0_triangle_shaded_opaque 2015-05-25 16:26:15 +02:00
Lionel Flandrin
72bb471f89 Implemented placeholder for GP0(0x38): gp0_quad_shaded_opaque 2015-05-25 16:26:15 +02:00
Lionel Flandrin
20c08756c5 Implement placeholder for GP0(0xC0): Image Store 2015-05-25 16:26:15 +02:00
Lionel Flandrin
519f11c40f Implement GP1(0x03): Display Enable 2015-05-25 16:26:15 +02:00
Lionel Flandrin
de1e0ee3e8 Implement GP0(0xA0): Image Load 2015-05-25 16:26:15 +02:00
Lionel Flandrin
5483ab4853 Ignore GP0(0x01) Clear Cache command 2015-05-25 16:26:15 +02:00
Lionel Flandrin
002b441049 Implement temporary hack to avoid BIOS lockup. 
At the moment if the vertical resolution is set to 480 lines (bit 19
of GPUSTAT is set) the BIOS deadlocks waiting for bit `31` of the same
GPUSTAT register to flip. To avoid this I lie and pretend the vertical
resolution is always 240 lines.
 2015-05-25 16:26:15 +02:00
Lionel Flandrin
caa99b608f Implemented placeholder for GP0(0x28): gp0_quad_mono_opaque 2015-05-25 16:26:15 +02:00
Lionel Flandrin
08465448ca GPU GP0: Add support for multi-word commands 2015-05-25 16:26:15 +02:00
Lionel Flandrin
4cfa4efee9 Implement GPU GP1: Display Horizontal and Vertical Range 2015-05-25 16:26:15 +02:00
Lionel Flandrin
72d8fbce12 Implement GPU GP1: Display VRAM Start 2015-05-25 16:26:15 +02:00
Lionel Flandrin
3626b50811 Implement GPU GP0: Mask Bit Setting 2015-05-25 16:26:15 +02:00
Lionel Flandrin
9cc7e49727 Implement GPU GP0: Texture Window 2015-05-25 16:26:15 +02:00
Lionel Flandrin
502fec2f86 Implement GPU GP0: Set Drawing Offset 2015-05-25 16:26:15 +02:00
Lionel Flandrin
61b46bd5da Fix comments: retreive -> retrieve 2015-05-25 16:26:15 +02:00
Lionel Flandrin
74103f9336 Implement GPU GP0: See Drawing Area 2015-05-25 16:26:15 +02:00