This change introduces exception handlers that default to a fatal error
with an on-screen description of the exception and some debugging
information.
It also adds the dprint() function as a definitely-needed helper and
removes bootlog_unmapped() by using the exception handler for the fatal
error display. (Also printf() is now required in all gint add-ins; this
is sad, but space is not as much of a constraint as debugging.)
Finally, the exception handler is used to handle an interrupt which is
an exception in practice, the DMA address error. On fx-CG 50, additional
DMA-related information is displayed on the screen. This is left out on
fx-9860G as there is not enough space.
This commit introduces bopti for fxcg50 with the first basic 16-bit
formats. The performance is rather slow, especially for large images,
and will need refinements and/or overclock to be really efficient in
full-screen real-time applications.
This commit introduces bopti for fx-CG 50. Currently the only
interfaces are the bopti_render_{clip,noclip} functions, and the
only supported formats are r5g6b5 and r5g6b5a.
The algorithm for r5g6b5 is optimized to perform longword accesses
using movua.l, whereas the algorithm for r5g6b5a uses plain word
accesses because transparency checks feel more difficult than one
more loop iteration.
These algorithms are still slow for large surfaces and struggle to
keep up 25 FPS in full-screen, so possible improvements with the
DMA should definitely be tested before restorting to overclock.
This change finally introduces gray image rendering with bopti. This
is the final iteration of bopti v2 and certainly the fastest so far.
All four profiles are supported, without change to the format.
This commit introduces three timer driver changes:
* Export the definitions of the timer structures to a detailed header at
<gint/mpu/tmu.h>, and re-use them in the driver.
This integration is still limited as the driver keeps its own address
definitions and event codes.
* Clean the timer stop routine that is used in the interrupt handler. Up
until now the interrupt handler would only stop TSTR, which is not
enough to cleanly leave the timer (need TCOR=TCNT=-1) and is not even
sound with respect to gint's semantics as UNIE stays enabled so the
timer is not made available again.
The interrupt handler now calls into C code when the timer stop
condition is met (callback returns non-zero) to keep this clean. This
unsurprisingly solves problems that occurred in certain situations
when a timer was used repeatedly.
* Expose timer addresses using a timer_address() function, compensating
for the lack of address definitions in <gint/mpu/tmu.h>. This
interface is likely to evolve in the future to better integrate the
address in the MPU headers and move them out of the driver.
This makes it possible to write application code without specifying the
target machine, which is especially useful for libraries. The first user
of this system is libprof.
Since Memallox's newlib port is currently unstable, gint has to
provide some standard functions on its own. Instead of a single
<gint/std.h> header, this commit makes a gint/std directory containing
headers under standard names.
* Now uses topti instead of fxlib for text (including MMU failure)
* Fit .pretext into 4k for everything before MMU succeeds
* A short version of sprintf() for dynamic messages
* Support a driver function, status(), to allow early driver debug
* Expose more useful platform information in <gint/mpu.h>
* Expose the first of a few CASIOWIN syscalls
Lephe
lephe