27 lines
545 B
ArmAsm
27 lines
545 B
ArmAsm
// #LAYOUT# STD * #TAKE
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// #LAYOUT# X16 BASIC_0 #TAKE-OFFSET 2000
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// #LAYOUT# * BASIC_0 #TAKE
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// #LAYOUT# * * #IGNORE
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//
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// Math package - copy FAC1 to memory location, do not round
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//
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// Input:
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// - .X - address low byte
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// - .Y - address high byte
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//
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// Output:
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// - .A - FAC1 exponent
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//
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// See also:
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// - https://www.c64-wiki.com/wiki/Floating_point_arithmetic
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// - https://codebase64.org/doku.php?id=base:kernal_floating_point_mathematics
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//
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mov_r_FAC1_MEM:
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// Start by rounding FAC1
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jsr round_FAC1
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jmp mov_FAC1_MEM
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