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Author SHA1 Message Date
Lephe 7d63a1b536
r61524 render-cg: support Prizm and fx-CG Manager 
This change adds a new HWCALC model, HWCALC_FXCG_MANAGER, which
identifies Casio's official fx-CG Manager software. Both the Prizm and,
to my surprise, the fx-CG Manager use the old RAM address of 88000000
(P1) and a8000000 (P2) instead of the new fx-CG 50 address of 8c000000
(P1) and ac000000 (P2).

The VRAM is hence adjusted at startup to move hardcoded pointers into
the proper space. Added to the kernel moving the VBR space dynamically
on the Prizm, this allows gint to be fully compatible with these
platforms.

The fx-CG Manager is detected by its product ID made of 0xff.

Also adds a proper interface to the R61524 driver, even though it's not
any more complete than previously, and fixes an oversight where the
HWURAM entry of the kernel data array was no longer computed since the
TLB management change.

As of now, the fx-CG Manager still has a bug regarding return-to-menu
since returning from the main menu doesn't work very well and often
loops. This has been seen occasionally on some Graph 90+E so it's
unlikely to be a platform-specific problem.
 2020-07-02 15:48:19 +02:00
Lephe 1c7b1350b4
general cleanup of the kernel 
* Removed .pretext sections since the TLB is now entirely dynamic; left
  only .text.entry for the start symbol.
* Reworked the main files of src/core to move the INTC to its own driver
  and let the kernel handle only VBR space and CPU (now: VBR & CPUOPM).
* Moved src/core/gint.c to src/core/kernel.c and centralized all driver
  loops that save or restore context for more robustness. This leaves
  the callbacks of cpu_setVBR() (formerly gint_setvbr()) pretty short.
* Coalesced gint_switch_out() and gint_switch_in() into a single
  function callback for cpu_setVBR().
* Added an abstraction of interrupt signals as an enumerated value so
  that drivers no longer hardcode the IPR and IMR numbers and bits,
  sometimes even with isSH3() due to differences in the SH7705.
* Changed the interrupt blocking method in cpu_setVBR() from SR.BL=1 to
  SR.IMASK=15 so that TLB misses are still handled. This removes the
  need for callback functions to be GMAPPED.
* Moved gint_osmenu() and its utilities to a new file src/core/osmenu.c.
 2020-06-20 17:18:51 +02:00
Lephe 0498344349
periodic check of SH3 compatibility 2020-05-31 22:26:30 +02:00
Lephe 61da7debc8
code review and display driver changes 
t6k11: use the gint array for variant detection
r61524: use true triple buffering by default
display: define DWIDTH and DHEIGHT
display: add C_RGB(r,g,b) (0 ≤ r,g,b ≤ 31) [fxcg50]
 2020-02-23 16:05:25 +01:00
Lephe 61e68d01bb
expose more platform-agnostic code 
May be useful later on for libraries such as libprof.
 2019-09-06 12:16:31 +02:00
lephe 3324d58afa core: add a hardware detection interface 2019-07-04 12:11:43 -04:00