[Coco] x register

[phil pt]

What is checking here because the manual includes nothing about the x
register.

5
reg.aa=path
callcode=$8D
reg.bb=2
RUN syscall(callcode,reg)
IF reg.lu<0 THEN lof=reg.lu+65536.
ELSE
lof=reg.lu
ENDIF
IF reg.lx<0 THEN mult=reg.lx+65536.
ELSE
mult=reg.lx
ENDIF
huser=(lof+mult*65536.)/SIZE(rec)



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