Hi, while the XMS spec is not specific about the internal version
number of himem, RBIL is:
Call the XMS driver "Get XMS version number" function with:
AH = 00h
Return: AX = XMS version (in BCD, AH=major, AL=minor)
BX = internal revision number (in BCD for HIMEM.SYS)
DX = High Memory Area (HMA) state
0001h HMA (1M to 1M + 64K) exists
0000h HMA does not exist
Tools which display the internal revision seem to expect BCD, e.g. 0x0311.
Eric
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