gint/TODO

Crucial, missing things.
! core:      the four basic memory functions
! core:      gint_switch() with driver contexts on stack and arbitrary code
! core:      use gint_switch() to handle TLB misses
! bopti:     fxcg50 version
! syscalls:  fxcg50 BFile calls

Tests to run.
* core:      run the alignment/size automated tests for memory functions
* topti:     all charsets

Complementary elements on existing code.
*            make fx9860g projects work out of the box on fxcg50
* topti:     support unicode fonts
* gray:      find good values for more models than the Graph 35+E II
* dma:       maybe relax the 4-byte size constraint for dma_memset()
* core:      try to leave add-in without reset in case of panic
* hardware:  fill in the HWMEM_FITTLB flag
* keyboard:  think of extended functions
* cpg:       spread spectrum on fxcg50
* bopti:     blending modes for monochrome bitmaps (use topti assembler)
* display:   use more of topti's assembler in drect()
* core:      use cmp/str for memchr()
* timer:     try putting addresses in <gint/mpu/tmu.h>
* r61524:    brightness control and clean the file
* t6k11:     check if dupdate() can be done by the DMA

Keep in mind.
* core:      run destructors when a task-switch results in leaving the app
* prizm:     don't hardcode stack address in fxcg50.ld
* prizm:     detect P1 static RAM (stack) in TLB
* core:      prove and use qdiv10() instead of __sdivsi3
* setjmp:    more registers may need to be saved
* core:      free heap when a task-switch results in leaving the app
* core:      save and restore interrupt masks
* timer:     make sure ETMU interrupts are disabled in ctx_restore()
* timer:     look for ways to improve the code again
* core:      document the SH7305 PFC in <gint/mpu/pfc.h>

Future directions.
* A complete file system abstraction
* Integrate overclock management
* Audio playback using Martin Poupe's method
* Serial communication [SCIF] [SCIFA]
* USB communication [USB]