Commit Graph

7 Commits

Author SHA1 Message Date
Lephe a99bffe7f4
iokbd keysc: space optimizations for SH3
* Reduce the keyboard queue size from 64 to 32, which is more than
  enough even for real-time games with multiple key presses.
* Pack the driver_event_t structure of the keyboard driver to make it 4
  bytes rather than 6 bytes. Combined with the previous item, this saves
  256 bytes off the BSS section (which is 3% of the SH3's static RAM).
* As part of a debugging attempt, updated the watchdog delay code in
  iokbd_delay() to make it usable in the current version of gint.
* Restored port registers more aggressively in iokbd_row().
2020-07-08 20:01:58 +02:00
Lephe a91a0a483b
core: remove some useless hardware info 2020-06-20 19:23:50 +02:00
Lephe 4ad2110efc
core: accept large add-ins and setup TLB management (UNSTABLE)
This change modifies the fx-CG 50 linker script to allow add-ins up to
2M and no longer complains about add-ins that don't fit in the TLB.

It also exposes the __TLB_LoadPTEH() syscall (%003 on fx9860g, %00c on
fxcg50) that answers TLB misses. This syscall can be called manually
from an add-in to load some pages and seems to work without problem.

However, this version does not provide any automatic TLB management,
some key areas of the kernel are still under TLB and some user code
(such as timer callbacks) is not! This version is suitable only for
add-ins smaller than 220k!
2020-06-14 11:01:27 +02:00
lephe 3324d58afa core: add a hardware detection interface 2019-07-04 12:11:43 -04:00
lephe 3f7c0a04ad way too much, including bopti/topti, timers, and more. 2019-02-21 21:00:26 +01:00
lephe 2f0e049c33 More interrupt system, exceptions, timers. 2018-08-01 20:41:36 +02:00
lephe 3b90b40dd7 Hybrid build system and runtime (no interrupts). t6k11 driver. Basic r61524 driver. 2018-04-19 13:24:26 +02:00