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apm weirdness on i386



	since last night or so, my desktop machine does not boot properly with
	openbsd-current.  it looks to be some apm issue, and apm code has some
	change yesterday.  backtrace (typed by hand) is attached.

	K6-2 300MHz, 128M RAM, Apollo VP3 chipset, Award BIOS (says 2A5LEPA9
	- is it ROM version?).  The symptom happens under BIOS APM is enabled,
	and disabled (both cases).

itojun


---
OpenBSD 2.6-current (GENERIC) #12: Mon Jan 31 13:53:06 JST 2000
    itojun@naan:/home/itojun/OepenBSD/src/sys/arch/i386/compile/GENERIC
cpu0: AMD K6-2 ("AuthenticAMD" 586-class) 299 MHz
cpu0: FPU,V86,DE,PSE,TSC,MSR,MCE,CX8,MMX
real mem  = 133795840
avail mem = 119717888
using 1658 buffers containing 6791168 bytes of memory
mainbus0 (root)
bios0 a mainbus0: AT/286+(54) BIOS, date 06/29/98
apm0 at bios0kernel: page fault trap, code=0
Stopped at      0x8090: kernel: page fault trap, code=0
Stopped at      _db_read_bytes+0x10:    movb    0(%ecx),%al

---
_db_read_bytes
_db_get_value
_db_disasm
_db_print_loc_and_inst
_db_trap
_kdb_trap
_trap() at _trap+0x218
--- trap (number 6) ---
(null)(530e,0,e048cce8,e0256486) at 0x8090
_apm_set_ver(e07a8800,e07b67c0,e048cd58,e03399ba,1,1,0,e015346d) at _apm_est_ver+0x41
_apmattach(...)
_config_attach(...)
_config_found_sm(...)
_mainbus_attach
_config_attach
_config_rootfound
_configure
_cpu_startup