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Length: 1024 (0x400)
Types: TextFile
Names: »CVTFLT.SRC«
└─⟦c9df7130d⟧ Bits:30005915 Pascal MT+ Release 5.2 (Jet-80)
└─ ⟦this⟧ »CVTFLT.SRC«
; converts the 16 bit integer in hl to a floating point # ; NAME CVTFLT ENTRY CVTFLT EXT ABS INCLUDE FPINIT.SRC ; ;THIS IS MOD CVTFLT,SO... $CVTFLT SET 0FFFFH ; INCLUDE FPMAC.SRC ; cvtflt: mov b,h ;check high byte, if negative, fix value call abs ;get absolute value of n mov a,b ;get old high byte ani 80h ;mask old high bit ora h ;or with absolute value mov h,a ;and restore pop b ;get return address mvi d,15 ;initial exponent, don't need intflg push d ;save on stack inx s ;only need one byte push h ;save high 16 bits lxi h,0 ;save low 16 bits push h push h ;save scr1... inx s ;..which is only one byte push x push y ;save ix...and iy push b ;save return address dad s push h ;save pointer pop x ;in ix... xchg ;...and de normfp 2 ;normalize the number pop h ;get return address pop y pop x ;restore index registers pop d ;throw away excess bytes xra a ;clear acc pchl ;and.....return ; «eof»