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https://github.com/stevenhowes/wbios.git
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Steve Howes
106 lines
2.8 KiB
Plaintext
106 lines
2.8 KiB
Plaintext
tinyBIOS change notes Pascal Dornier
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--------------------- pdornier@pcengines.com
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BUGS:
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- PS/2 mouse support needs more work, file available on request only.
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- CD Boot support needs more work, file available on request only.
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- Support for PCI bridges does not work right.
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A386 BUGS (version 4.05):
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- low(forward defined) not filled in correctly.
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- use32 causes offset 16 to be clobbered. STARTOFS should be > 0.
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HISTORY:
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This covers core changes only, not chipsets / board ports.
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Refer to respective source files for details on those.
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; new version
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pd 030304 DATA add 4 drive structure, IDE I/O and master slave info
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HDD add HD_INFO, 4 drive support
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; released as 1.3c
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pd 010413 DATA add d_extop -> top of extended memory.
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INT1X Fix Int15 function 88 to handle memory > 64MB,
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add Int15 function E8.
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POST2 Fix CMOS RAM to handle memory > 64MB, write
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d_extop.
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EQU Add safeorg macro to properly flag code overruns.
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; released as 1.3b
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pd 010413 FDD add STPC patch FD_VERF000 -> simulate verify by reading
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to F000 segment.
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; released as 1.3a
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pd 010214 KBD change reset jump to F000:FFF0 -> fixes AMD Elan SC520
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Ctrl-Alt-Del restart.
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pd 010207 KBD skip keyboard init if NO_KBC option set, KBC not
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present.
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pd 010126 all Ported to A386 assembler.
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; ancient history below
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pd 000816 KBD Fixed putbuf overrun prevention.
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pd 000815 EQU Changed from double use of m_vpal, m_vmsel to
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VID m_console, m_conkey (unused floppy bytes)
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COM Disable 2400 baud mode (set by DOS during bootup)
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if CONSOLE set.
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pd 000424 POST2 Add option QUICKMEM -> memory size and clear only.
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pd 000211 HDD Added support for new SanDisk CompactFlash cards.
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pd 991127 EQU Added variables for PS/2 mouse.
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INT1X Added hooks for PS/2 mouse.
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PS2MOUS Added PS/2 mouse support.
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COM Fixed m_devflg handling.
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SIO_NONE Moved to SIO directory.
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SMC* Moved to SIO directory.
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pd 991115 PCIPNP fix PCI I/O allocation: some devices (e.g. ESS Tech)
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have 16 bit base registers.
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pd 991020/21 DATA Add hd_top.
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HDD Add hd_top, needed to support M-Systems DiskOnChip.
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POST Add option for M-Systems DiskOnChip.
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pd 991003 LPT Fixed lp_test loop.
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pd 990603 POST Changed to RET_SP macro.
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AS.COM Added RET_SP macro to assembler.
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Abandoned CYRIXGX mode in assembler (inconsistent
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op codes depending on version).
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Source for assembler is now available in PASM
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directory.
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POST Added POST code and call for cs_cache
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if present (needs to be moved from decide routine).
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Added return label for cs_init, cs_det, allows
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return by JMP rather than RET.
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FILL16 Changed from .COM to .BIN extension.
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FILL32 Changed from .COM to .BIN extension.
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pd 990525 PCI Rewrote 32 bit PCI BIOS to fix Linux problem.
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pd 990501 HDD Add CDBOOT hook.
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