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14 Commits

Author SHA1 Message Date
Stanislav Shwartsman
e32d536abe
added ability to select memory block size configurable (#25) 
very large memory configurations require large memory block (or very large amount of blocks)
 2022-07-30 13:56:09 +03:00
Volker Ruppert
89522c30d8 Some more bx_bool to bool type changes. 
- bx_shadow_bool_c: removed unused bitnum feature and changed data type.
- Changed return type of memory handlers to bool.
- Modified virtual timer, PIC and PIT code.
 2021-01-30 23:55:24 +00:00
Stanislav Shwartsman
abac80801f more bx_bool -> bool also fixing bxhub.cc case where bx_bool were assigned integer -1 value 2021-01-30 17:37:42 +00:00
Stanislav Shwartsman
9314902a85 convert some defines to typed consts 2021-01-30 17:06:34 +00:00
Stanislav Shwartsman
bea432dacb fixed compilation with no debugger configured in 2021-01-02 14:04:35 +00:00
Stanislav Shwartsman
41ea50ba22 complete transition to new disasm, remove old disasm from source code 2021-01-02 13:43:10 +00:00
Volker Ruppert
4d6a88ec94 Fixed dbg_fetch_mem() and dbg_set_mem() similar to other memory access methods. 
- Always apply the A20 setting to the requested address.
- Fixed the conditions for SMRAM access.
- Added support for memory handlers and removed direct VGA memory access.
- Added support for reading from BIOS flash memory.
 2020-12-08 19:52:39 +00:00
Volker Ruppert
11318c98f3 Improved flash memory support for the BIOS EEPROM (now emulating Intel(tm) 
flash chips.
- 28F001BX-T for 128k BIOS image (two 4k parameter blocks below boot block)
- 28F002BC-T for 256k BIOS image (two 8k parameter blocks below boot block)
- Only tested updating ESCD by external BIOS images. Bochs BIOS currently
  writes configuration to shadow RAM.
 2020-11-29 08:47:13 +00:00
Volker Ruppert
691461df4d Some work on the flash memory emulation for the BIOS ROM EEPROM. According to 
the flashrom project a JEDEC chip needs to be emulated here. Tests with BIOS
images designed for the i440FX chipset are okay, but for the i440BX chipset
some more commands need to implemented.
 2020-11-07 16:31:46 +00:00
Volker Ruppert
b91f907a1c Some BIOS ROM related changes in the memory code. 
- Store BIOS ROM start address and use it instead of hardcoded BIOS_MASK.
- Added stub for BIOS ROM access switches.
- Verify checksum of legacy Bochs BIOS, too.
 2020-11-01 16:13:38 +00:00
Volker Ruppert
2293308afe BIOS ROM write support requires a suitable flash memory emulation for the 
selected PCI chipset. When testing Bochs with a real BIOS image the programming
sequence for the ESCD unexpectedly overwrites some BIOS locations and it fails
to reboot. For the i440BX AGP chipset development it is required to test with
a real BIOS image, but currently reporting "unknown flash type". For now I have
added two stubs with unmodified behaviour.
 2020-10-30 17:34:12 +00:00
Volker Ruppert
50dfe4b8de Some fixes for MSVC. 
- Fixed compilation failure of MSVC plugin 'speaker'.
- Fixed some MSVC warnings.
 2018-05-21 16:11:46 +00:00
Volker Ruppert
19b98b1145 Simplified code for the "optromimage" and "optramimage" options stuff (saving 
configuration, loading images). Cleaned up "romimage" option parsing and
prepared parameter "options" for the behaviour of the Bochs BIOS.
TODO: implement BIOS option "fastboot" to skip the boot menu prompt.
 2017-02-14 20:11:58 +00:00
Volker Ruppert
cd68194269 Added Android host platform support to Bochs based on SF patch #534. 
- added Android case to the configure script.
- renamed file memory.h to memory-bochs.h to fix conflict with NDK.
- fixed Android issues in some files.
 2016-08-12 17:06:14 +00:00