Shenmue Script - Revision history

LemonHaze: Added float comment to opcodes

2021-09-17T14:58:50Z

Added float comment to opcodes

← Older revision		Revision as of 15:58, 17 September 2021
Line 237:		Line 237:
	\| 0x9E \|\| 1001 1110 \|\| signed cast		\| 0x9E \|\| 1001 1110 \|\| signed cast
	\|-		\|-
	\| 0x9F \|\| 1001 1111 \|\| <=		\| 0x9F \|\| 1001 1111 \|\| (float) <=
	\|-		\|-
	\| 0xA0 \|\| 1010 0000 \|\| <		\| 0xA0 \|\| 1010 0000 \|\| (float) <
	\|-		\|-
	\| 0xA1 \|\| 1010 0001 \|\| >= (<= inverted)		\| 0xA1 \|\| 1010 0001 \|\| (float) >= (<= inverted)
	\|-		\|-
	\| 0xA2 \|\| 1010 0010 \|\| > (< inverted)		\| 0xA2 \|\| 1010 0010 \|\| (float) > (< inverted)
	\|-		\|-
	\| 0xA3 \|\| 1010 0011 \|\| +		\| 0xA3 \|\| 1010 0011 \|\| (float) +
	\|-		\|-
	\| 0xA4 \|\| 1010 0100 \|\| -		\| 0xA4 \|\| 1010 0100 \|\| (float) -
	\|-		\|-
	\| 0xA5 \|\| 1010 0101 \|\| *		\| 0xA5 \|\| 1010 0101 \|\| (float) *
	\|-		\|-
	\| 0xA6 \|\| 1010 0110 \|\| /		\| 0xA6 \|\| 1010 0110 \|\| (float) /
	\|}		\|}

LemonHaze at 10:55, 15 August 2021

2021-08-15T10:55:25Z

← Older revision		Revision as of 11:55, 15 August 2021
Line 193:		Line 193:
	\| 0x84 \|\| 1000 0100 \|\| [MOBJ] Reads 32-bit value from cycle pointer		\| 0x84 \|\| 1000 0100 \|\| [MOBJ] Reads 32-bit value from cycle pointer
	\|-		\|-
	\| 0x85 \|\| 1000 0101 \|\| [MOBJ] Writes 8-bit ~~from~~ cycle pointer		\| 0x85 \|\| 1000 0101 \|\| [MOBJ] Writes 8-bit to cycle pointer
	\|-		\|-
	\| 0x86 \|\| 1000 0110 \|\| [MOBJ] Writes 16-bit ~~from~~ cycle pointer		\| 0x86 \|\| 1000 0110 \|\| [MOBJ] Writes 16-bit to cycle pointer
	\|-		\|-
	\| 0x87 \|\| 1000 0111 \|\| [MOBJ] Writes 32-bit ~~from~~ cycle pointer		\| 0x87 \|\| 1000 0111 \|\| [MOBJ] Writes 32-bit to cycle pointer
	\|-		\|-
	\| 0x88 \|\| 1000 1000 \|\| ==		\| 0x88 \|\| 1000 1000 \|\| ==

LemonHaze: Added missing MOBJ opcodes

2021-08-15T10:55:01Z

Added missing MOBJ opcodes

← Older revision		Revision as of 11:55, 15 August 2021
Line 187:		Line 187:
	\| 0x81 \|\| 1000 0001 \|\| Read R14 value to stack		\| 0x81 \|\| 1000 0001 \|\| Read R14 value to stack
	\|-		\|-
	\| 0x82 \|\| 1000 0010 \|\| MOBJ ~~accessor?~~		\| 0x82 \|\| 1000 0010 \|\| [MOBJ] Reads 8-bit value from cycle pointer
	\|-		\|-
	\| 0x83 \|\| 1000 0011 \|\| MOBJ ~~accessor?~~		\| 0x83 \|\| 1000 0011 \|\| [MOBJ] Reads 16-bit value from cycle pointer
	\|-		\|-
	\| 0x84 \|\| 1000 0100 \|\| MOBJ ~~accessor?~~		\| 0x84 \|\| 1000 0100 \|\| [MOBJ] Reads 32-bit value from cycle pointer
	\|-		\|-
	\| 0x85 \|\| 1000 0101 \|\| MOBJ ~~accessor?~~		\| 0x85 \|\| 1000 0101 \|\| [MOBJ] Writes 8-bit from cycle pointer
	\|-		\|-
	\| 0x86 \|\| 1000 0110 \|\| MOBJ ~~accessor?~~		\| 0x86 \|\| 1000 0110 \|\| [MOBJ] Writes 16-bit from cycle pointer
	\|-		\|-
	\| 0x87 \|\| 1000 0111 \|\| MOBJ ~~accessor?~~		\| 0x87 \|\| 1000 0111 \|\| [MOBJ] Writes 32-bit from cycle pointer
	\|-		\|-
	\| 0x88 \|\| 1000 1000 \|\| ==		\| 0x88 \|\| 1000 1000 \|\| ==

PhilYeahz at 20:55, 14 June 2019

2019-06-14T20:55:08Z

← Older revision		Revision as of 21:55, 14 June 2019
Line 4:		Line 4:

	=Registers=		=Registers=
	There is a stack base and stack pointer.<br>		==Stack==
	~~A return value register~~ is ~~also available for~~ function ~~calls, which can be used by the next opcodes~~.		There is a stack base and stack pointer.
			==R14==
			R14 is the general purpose register of the script parser.<br>
			It is used to store function call return values and to do conditional jumping.

	=Instructions=		=Instructions=
Line 76:		Line 79:
	\| 0x35 \|\| 0011 0101 nnnnnnnn nnnnnnnn nnnnnnnn nnnnnnnn \|\| Jumps by the amount of n bytes		\| 0x35 \|\| 0011 0101 nnnnnnnn nnnnnnnn nnnnnnnn nnnnnnnn \|\| Jumps by the amount of n bytes
	\|-		\|-
	\| 0x16 \|\| 0001 0110 nnnnnnnn \|\| Jumps by the amount of n bytes		\| 0x16 \|\| 0001 0110 nnnnnnnn \|\| Jumps by the amount of n bytes '''IF''' R14 is zero
	\|-		\|-
	\| 0x26 \|\| 0010 0110 nnnnnnnn nnnnnnnn \|\| Jumps by the amount of n bytes		\| 0x26 \|\| 0010 0110 nnnnnnnn nnnnnnnn \|\| Jumps by the amount of n bytes '''IF''' R14 is zero
	\|-		\|-
	\| 0x36 \|\| 0011 0110 nnnnnnnn nnnnnnnn nnnnnnnn nnnnnnnn \|\| Jumps by the amount of n bytes		\| 0x36 \|\| 0011 0110 nnnnnnnn nnnnnnnn nnnnnnnn nnnnnnnn \|\| Jumps by the amount of n bytes '''IF''' R14 is zero
	\|}		\|}

Line 180:		Line 183:
	! Opcode !! Code !! Description		! Opcode !! Code !! Description
	\|-		\|-
	\| 0x80 \|\| 1000 0000 \|\| ~~Read~~		\| 0x80 \|\| 1000 0000 \|\| Write stack value to R14
	\|-		\|-
	\| 0x81 \|\| 1000 0001 \|\| ~~Write~~		\| 0x81 \|\| 1000 0001 \|\| Read R14 value to stack
	\|-		\|-
	\| 0x82 \|\| 1000 0010 \|\| MOBJ accessor?		\| 0x82 \|\| 1000 0010 \|\| MOBJ accessor?

PhilYeahz: /* 0x40 - 0x7F */

2019-05-03T13:13:12Z

0x40 - 0x7F

← Older revision		Revision as of 14:13, 3 May 2019
Line 156:		Line 156:

	=== 0x40 - 0x7F ===		=== 0x40 - 0x7F ===
	~~Intermediate~~ value reading into stack.<br><br>		Immediate value reading into stack.<br><br>
	01xx ddnn<br>		01xx ddnn<br>
	x = ~~intermediate~~ size (1 = 1 byte, 2 = 2 byte, 3 = 4 byte)<br>		x = immediate value size (1 = 1 byte, 2 = 2 byte, 3 = 4 byte)<br>
	d = command<br>		d = command<br>
	n = subcommand		n = subcommand

PhilYeahz: /* 0x00 - 0x3F (0x00 - 0x3D) */

2019-05-03T13:12:48Z

0x00 - 0x3F (0x00 - 0x3D)

← Older revision		Revision as of 14:12, 3 May 2019
Line 14:		Line 14:
	Control-flow, Function calling.<br><br>		Control-flow, Function calling.<br><br>
	00xx nnnn<br>		00xx nnnn<br>
	x = ~~intermediate~~ size (1 = 1 byte, 2 = 2 byte, 3 = 4 byte)<br>		x = immediate value size (1 = 1 byte, 2 = 2 byte, 3 = 4 byte)<br>
	n = command		n = command

PhilYeahz: /* Stack */

2019-05-03T08:19:50Z

Stack

← Older revision		Revision as of 09:19, 3 May 2019
Line 52:		Line 52:
	! Opcode !! Code !! Description		! Opcode !! Code !! Description
	\|-		\|-
	\| 0x13 \|\| 0001 0011 nnnnnnnn \|\| Move stack pointer by n ~~/ 4~~ bytes		\| 0x13 \|\| 0001 0011 nnnnnnnn \|\| Move stack pointer by n bytes
	\|-		\|-
	\| 0x23 \|\| 0010 0011 nnnnnnnn nnnnnnnn \|\| Move stack pointer by n ~~/ 4~~ bytes		\| 0x23 \|\| 0010 0011 nnnnnnnn nnnnnnnn \|\| Move stack pointer by n bytes
	\|-		\|-
	\| 0x33 \|\| 0011 0011 nnnnnnnn nnnnnnnn nnnnnnnn nnnnnnnn \|\| Move stack pointer by n ~~/ 4~~ bytes		\| 0x33 \|\| 0011 0011 nnnnnnnn nnnnnnnn nnnnnnnn nnnnnnnn \|\| Move stack pointer by n bytes
	\|}		\|}

PhilYeahz: /* 0x40 - 0x7F */

2019-05-03T08:14:23Z

0x40 - 0x7F

← Older revision		Revision as of 09:14, 3 May 2019
Line 164:		Line 164:
	\|-		\|-
	! Opcode !! Code !! Description		! Opcode !! Code !! Description
			\|-
			\| 0x40 - 0x4F \|\| 0100 xxxx \|\| Writes value from last time to stack
	\|-		\|-
	\| 0x50 - 0x5F \|\| 0101 xxxx nnnnnnnn \|\| Writes n to stack (1 byte)		\| 0x50 - 0x5F \|\| 0101 xxxx nnnnnnnn \|\| Writes n to stack (1 byte)

PhilYeahz: /* 0x80 - 0xBF (0x80 - 0xA6) */

2019-05-02T20:00:10Z

0x80 - 0xBF (0x80 - 0xA6)

← Older revision		Revision as of 21:00, 2 May 2019
Line 194:		Line 194:
	\| 0x87 \|\| 1000 0111 \|\| MOBJ accessor?		\| 0x87 \|\| 1000 0111 \|\| MOBJ accessor?
	\|-		\|-
	\| 0x88 \|\| 1000 1000 \|\| !=		\| 0x88 \|\| 1000 1000 \|\| ==
	\|-		\|-
	\| 0x89 \|\| 1000 1001 \|\| !=		\| 0x89 \|\| 1000 1001 \|\| !=

PhilYeahz: /* 0x40 - 0x7F */

2019-05-02T19:34:33Z

0x40 - 0x7F

← Older revision		Revision as of 20:34, 2 May 2019
Line 165:		Line 165:
	! Opcode !! Code !! Description		! Opcode !! Code !! Description
	\|-		\|-
	\| 0x50 - 0x5F \|\| 0101 xxxx nnnnnnnn \|\| Writes n ~~somewhere(~~stack?) (1 byte)		\| 0x50 - 0x5F \|\| 0101 xxxx nnnnnnnn \|\| Writes n to stack (1 byte)
	\|-		\|-
	\| 0x60 - 0x6F \|\| 0110 xxxx nnnnnnnn nnnnnnnn \|\| Writes n ~~somewhere(~~stack?) (2 byte)		\| 0x60 - 0x6F \|\| 0110 xxxx nnnnnnnn nnnnnnnn \|\| Writes n to stack (2 byte)
	\|-		\|-
	\| 0x70 - 0x7F \|\| 0111 xxxx nnnnnnnn nnnnnnnn nnnnnnnn nnnnnnnn \|\| Writes n ~~somewhere(~~stack?) (4 byte)		\| 0x70 - 0x7F \|\| 0111 xxxx nnnnnnnn nnnnnnnn nnnnnnnn nnnnnnnn \|\| Writes n to stack (4 byte)
	\|}		\|}