prog8/examples/test.p8

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%import diskio
%import textio
;%import math
;%import verafx
%zeropage basicsafe
%option no_sysinit
main {
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%option verafxmuls
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sub start() {
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word w1 = -123
word w2 = 222
ubyte b2 = 222
byte sb2 = 111
txt.print_w(w1*w2)
txt.nl()
txt.print_w(w1*222)
txt.nl()
w1 = -123
w1 *= 222
txt.print_w(w1)
txt.nl()
w1 = -123
w1 *= w2
txt.print_w(w1)
txt.nl()
w1 = -123
w1 *= (w2-1)
txt.print_w(w1)
txt.nl()
w1 = -123
w1 *= b2
txt.print_w(w1)
txt.nl()
w1 = -123
w1 *= sb2
txt.print_w(w1)
txt.nl()
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; txt.print_uw(math.mul16_last_upper())
; txt.nl()
; uword value1=5678
; uword value2=9999
; uword result = value1*value2
; uword upper16 = math.mul16_last_upper()
; txt.print_uw(result)
; txt.spc()
; txt.print_uw(upper16)
; txt.nl()
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; const word MULTIPLIER = 431
;
; ; verify results:
; for value in -50 to 50 {
; if value*MULTIPLIER != verafx.muls(value, MULTIPLIER) {
; txt.print("verafx muls error\n")
; sys.exit(1)
; }
; }
;
;
; word value
; txt.print("verafx muls...")
; cbm.SETTIM(0,0,0)
; for value in -50 to 50 {
; repeat 250 void verafx.muls(value, MULTIPLIER)
; }
; txt.print_uw(cbm.RDTIM16())
; txt.nl()
;
; txt.print("6502 muls...")
; cbm.SETTIM(0,0,0)
; for value in -50 to 50 {
; repeat 250 cx16.r0s = value*MULTIPLIER
; }
; txt.print_uw(cbm.RDTIM16())
; txt.nl()
}
}
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