OpenEuphoria

Re: BL, BH etc...

• Posted by Mike Fowler <stoner at NELSUN.GEN.NZ> Aug 29, 1997
• 811 views

MF> I've been making some handy mouse routines usding the dos interrupt
MF> #33, but theres one that requires REG_AL and REG_AH to store
MF> information, but machine.e only has REG_AX = 7 etc. as constants.
MF> Does anyone out there know what REG_BL, REG_BH etc are?
GH> Say you want Interrupt #10, Service #10, Function #07.
GH> AH = #10
GH> AL = #07
GH> then,
GH> regs[REG_AX] = #1007
GH> regs = dos_interrupt(#10, regs)

okay - ive got that.. thanks :)

GH> Each register is 16 bits wide and can be divided into high and low.
GH> REG_BL is REG_BX low 8 bits
GH> REG_BH is REG_BX high 8 bits

GH> Now have I confused you?

maybe... i _think_ i understand now... so if, say, REG_AX = #3F, then
REG_AL = #3, and REG_AH = #F ???

or am i dreaming?

Thanks again :)

Mike Fowler - mike.fowler at nelsun.gen.nz
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