Virtual Machine Instruction LinkPTTN

Mnemonic: LinkPTTN

Hex Code:	20	05	00	00	00	00	HT	TT*	unconditional
	20	M5	00	XX	00	YY	HT	TT*	M=1-7, Compare register XX to register YY
	20	M5	00	XX	KK	KK	HT	TT*	M=9-F, Compare register XX to constant KKKK

*Bytes 6&7 as bits:

Byte 6								Byte 7
7	6	5	4	3	2	1	0	7	6	5	4	3	2	1	0
H	H	H	H	H	H	T	T	T	T	T	T	T	T	T	T

Action:	The LinkPTTN command jumps to Part of Title (PTT, also known as chapter) "TTT" (bytes 6&7) in the current title, and can set SPRM 8 to highlight a different button by setting "H" (part of byte 6) non-zero.
Order:	If a compare is specified, it is performed first. If the conditions are met the LinkPTTN is executed.
Comments:	Restricted to the current title, not for use in menu PGCs.

Compare operation codes
register to register		register to constant		Alternate mnemonic	Comments
M	operation	M	operation	Alternate mnemonic	Comments
1	RegX & RegY	9	RegX & K	BC	Bitwise compare, the two operands are anded, if the result is non-zero the condition is true
2	RegX == RegY	A	RegX == K	EQ	If the two operands are equal the condition is true
3	RegX != RegY	B	RegX != K	NE	If the two operands are not equal the condition is true
4	RegX >= RegY	C	RegX >= K	GE	If RegX is greater than or equal to the right operand the condition is true
5	RegX > RegY	D	RegX > K	GT	If RegX is greater than the right operand the condition is true
6	RegX <= RegY	E	RegX <= K	LE	If RegX is less than or equal to the right operand the condition is true
7	RegX < RegY	F	RegX < K	LT	If RegX is less than the right operand the condition is true

Register Codes
0x00 through 0x0F	General Purpose registers 0 to 15 (GPRM)
0x80 through 0x97	System Parameter registers 0 to 23 (SPRM)
all others	do not use

Numerically

Alphabetically

Index

Alphabetically

Numerically

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