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added first stubs for math routines

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FeralChild64 committed 2020-01-28 18:33:52 +01:00
1 parent c41316d482
commit f9f13f8334
12 files changed
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c64/basic/,stubs_math/ba8c.CONUPK.s
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// #LAYOUT# STD * #TAKE
// #LAYOUT# * BASIC_0 #TAKE
// #LAYOUT# * * #IGNORE
//
// Math package - fetch FAC2 from RAM location
//
// Input:
// - .A - address low byte
// - .Y - address high byte
//
// Output:
// - .A - FAC1 exponent (XXX really FAC1?)
//
// See also:
// - [CM64] Computes Mapping the Commodore 64 - page 114
// - https://www.c64-wiki.com/wiki/Floating_point_arithmetic
// - https://codebase64.org/doku.php?id=base:kernal_floating_point_mathematics
//
// XXX provide implementation
CONUPK:
STUB_IMPLEMENTATION()
c64/basic/,stubs_math/ba8c.interop
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This is an important floating point math routine, documented in many places.
XXX - try to find real-life example
c64/basic/,stubs_math/bba2.MOVFM.s
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// #LAYOUT# STD * #TAKE
// #LAYOUT# * BASIC_0 #TAKE
// #LAYOUT# * * #IGNORE
//
// Math package - copy FAC1 to memory location, rounds if asked
//
// Input:
// - .X - address low byte
// - .Y - address high byte
// - $70 - if MSB is set performs rouding
//
// Output:
// - .A - FAC1 exponent
//
// See also:
// - [CM64] Computes Mapping the Commodore 64 - page 114
// - https://www.c64-wiki.com/wiki/Floating_point_arithmetic
// - https://codebase64.org/doku.php?id=base:kernal_floating_point_mathematics
//
// XXX provide implementation
MOVMF:
STUB_IMPLEMENTATION()
c64/basic/,stubs_math/bba2.interop
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This is an important floating point math routine, documented in many places.
XXX - try to find real-life example
c64/basic/,stubs_math/bbd4.MOVMF.s
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// #LAYOUT# STD * #TAKE
// #LAYOUT# * BASIC_0 #TAKE
// #LAYOUT# * * #IGNORE
//
// Math package - fetch FAC1 from RAM location
//
// Input:
// - .A - address low byte
// - .Y - address high byte
//
// Output:
// - .A - FAC1 exponent, affects status flags
// - .Y - always 0
//
// See also:
// - https://www.c64-wiki.com/wiki/Floating_point_arithmetic
// - https://codebase64.org/doku.php?id=base:kernal_floating_point_mathematics
//
// XXX provide implementation
MOVFM:
STUB_IMPLEMENTATION()
c64/basic/,stubs_math/bbd4.interop
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This is an important floating point math routine, documented in many places.
XXX - try to find real-life example
c64/basic/,stubs_math/bbfc.MOVEF.s
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// #LAYOUT# STD * #TAKE
// #LAYOUT# * BASIC_0 #TAKE
// #LAYOUT# * * #IGNORE
//
// Math package - copy FAC2 to FAC1
//
// See also:
// - [CM64] Computes Mapping the Commodore 64 - page 115
// - https://www.c64-wiki.com/wiki/Floating_point_arithmetic
// - https://codebase64.org/doku.php?id=base:kernal_floating_point_mathematics
//
// XXX provide implementation
MOVEF:
STUB_IMPLEMENTATION()
c64/basic/,stubs_math/bbfc.interop
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This is an important floating point math routine, documented in many places.
XXX - try to find real-life example
c64/basic/,stubs_math/bc0f.MOVFA.s
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// #LAYOUT# STD * #TAKE
// #LAYOUT# * BASIC_0 #TAKE
// #LAYOUT# * * #IGNORE
//
// Math package - copy FAC1 to FAC2, skips rounding
//
// See also:
// - [CM64] Computes Mapping the Commodore 64 - page 115
// - https://www.c64-wiki.com/wiki/Floating_point_arithmetic
// - https://codebase64.org/doku.php?id=base:kernal_floating_point_mathematics
//
// XXX provide implementation
MOVFA:
STUB_IMPLEMENTATION()
c64/basic/,stubs_math/bc0f.interop
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This is an important floating point math routine, documented in many places.
XXX - try to find real-life example