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* Work in progress...
ORIG 0
Y CON 0 Y is stored here.
G CON 0 G will get stored here.
C CON 0 C will get stored here.
X CON 0 X will get stored here.
Z CON 0 Z will get stored here.
D CON 0 D will get stored here.
ORIG 1000
START JMP DOE
* Date of Easter routine. Assumes Y is in address 0.
DOE LDX Y Step E1
ENTA 0
DIV =19=
INCX 1
STX G
ENTA 0 Step E2
LDX Y
DIV =100=
INCA 1
STA C
ENTA 0 Step E3
ENTA 3 Compute X
MUL C
DIV =4=
DECA 12
STA X
ENTA 8 Compute Z
MUL C
INCX 5
DIV =25=
DECA 5
STA Z
ENTA 5 Compute D
MUL Y
DIV =4=
SUB X
DECA 10
STA D
STOP HLT
END START
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