mirror of
https://gitlab.com/xCrystal/pokecrystal-board.git
synced 2024-11-16 11:27:33 -08:00
104 lines
1.8 KiB
NASM
104 lines
1.8 KiB
NASM
; Value macros
|
|
|
|
; Many arbitrary percentages are simple base-10 or base-16 values:
|
|
; - 10 = 4 percent
|
|
; - 15 = 6 percent
|
|
; - $10 = 6 percent + 1 = 7 percent - 1
|
|
; - 20 = 8 percent
|
|
; - 25 = 10 percent
|
|
; - 30 = 12 percent
|
|
; - 40 = 16 percent
|
|
; - 50 = 20 percent - 1
|
|
; - 60 = 24 percent - 1
|
|
; - 70 = 28 percent - 1
|
|
; - 80 = 31 percent + 1 = 32 percent - 1
|
|
; - 85 = 33 percent + 1 = 34 percent - 1
|
|
; - 100 = 39 percent + 1 = 40 percent - 2
|
|
; - 120 = 47 percent + 1
|
|
; - 123 = 49 percent - 1
|
|
; - 160 = 63 percent
|
|
; - 180 = 71 percent - 1 = 70 percent + 2
|
|
; - 200 = 79 percent - 1
|
|
; - 230 = 90 percent + 1
|
|
percent EQUS "* $ff / 100"
|
|
|
|
; e.g. 1 out_of 2 == 50 percent + 1 == $80
|
|
out_of EQUS "* $100 /"
|
|
|
|
assert_power_of_2: MACRO
|
|
assert (\1) & ((\1) - 1) == 0, "\1 must be a power of 2"
|
|
ENDM
|
|
|
|
; Constant data (db, dw, dl) macros
|
|
|
|
dwb: MACRO
|
|
dw \1
|
|
db \2
|
|
ENDM
|
|
|
|
dbw: MACRO
|
|
db \1
|
|
dw \2
|
|
ENDM
|
|
|
|
dn: MACRO ; nybbles
|
|
rept _NARG / 2
|
|
db ((\1) << 4) | (\2)
|
|
shift 2
|
|
endr
|
|
ENDM
|
|
|
|
dc: MACRO ; "crumbs"
|
|
rept _NARG / 4
|
|
db ((\1) << 6) | ((\2) << 4) | ((\3) << 2) | (\4)
|
|
shift 4
|
|
endr
|
|
ENDM
|
|
|
|
dt: MACRO ; three-byte (big-endian)
|
|
db LOW((\1) >> 16), HIGH(\1), LOW(\1)
|
|
ENDM
|
|
|
|
dd: MACRO ; four-byte (big-endian)
|
|
db HIGH((\1) >> 16), LOW((\1) >> 16), HIGH(\1), LOW(\1)
|
|
ENDM
|
|
|
|
bigdw: MACRO ; big-endian word
|
|
db HIGH(\1), LOW(\1)
|
|
ENDM
|
|
|
|
dba: MACRO ; dbw bank, address
|
|
rept _NARG
|
|
dbw BANK(\1), \1
|
|
shift
|
|
endr
|
|
ENDM
|
|
|
|
dab: MACRO ; dwb address, bank
|
|
rept _NARG
|
|
dwb \1, BANK(\1)
|
|
shift
|
|
endr
|
|
ENDM
|
|
|
|
dba_pic: MACRO ; dbw bank, address
|
|
db BANK(\1) - PICS_FIX
|
|
dw \1
|
|
ENDM
|
|
|
|
bcd: MACRO
|
|
rept _NARG
|
|
dn ((\1) % 100) / 10, (\1) % 10
|
|
shift
|
|
endr
|
|
ENDM
|
|
|
|
sine_table: MACRO
|
|
; \1 samples of sin(x) from x=0 to x<32768 (pi radians)
|
|
x = 0
|
|
rept \1
|
|
dw (sin(x) + (sin(x) & $ff)) >> 8 ; round up
|
|
x = x + DIV(32768, \1) ; a circle has 65536 "degrees"
|
|
endr
|
|
ENDM
|