WireMod CPU Ref.

ZCPU Reference

Usable directly:
Main Set: EAX, EBX, ECX, EDX, ESI, EDI, ESP, EBP
Extended Set: R0, R1, ..., R31

Vectors/Matrix:
scalar name,...; //For example "scalar x,10"
vector1f name,...;
vector2f name,...;
vector3f name,...;
vector4f name,...;
vec1f name,...;
vec2f name,...;
vec3f name,...;
vec4f name,...;
uv name,...;
color name,...;
matrix name; //No default initializer

Num	Registers		Description
----|---------------|--------------------------------
00	IP				Instruction Pointer
01	EAX				General Purpose register A
02	EBX				General Purpose register B
03	ECX				General Purpose register C
04	EDX				General Purpose register D
05	ESI				Source Index
06	EDI				Destination Index
07	ESP				Stack Pointer
08	EBP				Base Pointer
09	ESZ				Stack Size
16	CS				Code Segment
17	SS				Stack Segment
18	DS				Data Segment
19	ES				Extra Segment
20	GS				User Segment
21	FS				User Segment
22	KS				Key Segment
23	LS				Library Segment
24	IDTR			Interrupt Descriptor Table Pointer
25	CMPR			Comparsion Result Register
26	XEIP			Pointer to start of currently executed instruction
27	LADD			Current Interrupt Code
28	LINT			Current Interrupt Number
29	TMR				Instruction/Cycle Counter
30	TIMER			Internal Precise Timer
31	CPAGE			Current Page Number
32	IF				Interrupts Enabled Flag
33	PF				Protected Mode Flag
34	EF				Extended Mode Flag
35	NIF				Next cycle interrupt enabled flag state
36	MF				Extended Memory Mapping Flag
37	PTBL			Page Table Offset
38	PTBE			Page Table Number of Entries
39	PCAP			Processor Paging System Capability
40	RQCAP			Processor delayed memory request capability
41	PPAGE			Previous Page ID
42	MEMRQ			Type of the Memory Request
43	RAMSize			Amount of Internal Memory
44	External		External I/O operation
45	BusLock			Is Bus Locked for Read/Write
46	Idle			Should CPU skip some cycles
47	INTR			Handling an Interrupt
48	SerialNo		Processor Serial Number
49	CODEBYTES		Amount of bytes executed so far
50	BPREC			Binary Precision Level
51	IPREC			Integer Precision Level
52	NIDT			Number of interrupt descriptor table entries
53	BlockStart		Start Offset of the Block
54	BlockSize		Size of the Block
55	VMODE			Vector Mode (2: 2D, 3: 3D)
56	XTRL			Runlevel for External Memory Access
57	HaltPort		Halt until this port changes value
58	HWDEBUG			Hardware Debug Mode Active
59	DBGSTATE		Hardware Debug Mode State
60	DBGADDR			Hardware Debug Mode Address/Parameter
61	CRL				Current RunLevel
62	TimerDT			Current Time Discrete Step
63	MEMADDR			Address requested by the memory operation
64	TimerMode		Timer Mode (off, instructions, seconds)
65	TimerRate		Timer Rate
66	TimerPrevTime	Previous Timer Fire Time
67	TimerAddress	Number of external interrupt to call when timer fires


Num	Instruction		Operation				Description
----|---------------|-----------------------|-----------------------------------------
000	STOP			INT 2					Stops execution
001	JNE X			JNE X					Jump to X if Not Equal
001	JNZ X			JNE X					Jump to X if Not Zero
002	JMP X			JMP X					Jump to X
003	JG X			JG X					Jump to X if Greater
003	JNLE X			JG X					Jump to X if not Less or Equal
004	JGE X			JGE X					Jump to X if Greater or Equal
004	JNL X			JGE X					Jump to X if not Less
005	JL X			JL X					Jump to X if Less
005	JNGE X			JL X					Jump to X if not Greater or Equal
006	JLE X			JLE X					Jump to X if Less or Equal
006	JNG X			JLE X					Jump to X if not Greater
007	JE X			JE X					Jump to X if Equal
007	JZ X			JE X					Jump to X if Zero
008	CPUID X			EAX = CPUID				Writes to EAX:
												X=0:Version (10.00 as 1000)
												X=1:IRAM Size
												X=2:Type	(0=ZCPU; 1=ZGPU Beta; 2=ZSPU; 3=ZGPU)
												X=3:IROM Size
009	PUSH X			PUSH X					Pushes X to Stack
010	ADD X,Y			X = X + Y				Adds Y to X
011	SUB X,Y			X = X - Y				Subtracts Y to X
012	MUL X,Y			X = X * Y				Multiply Y to X
013	DIV X,Y			X = X / Y				Divide Y to X (Triggers Error/IRQ 3 if Y = 0)
014	MOV X,Y			X = Y					Copy Y to X
015	CMP X,Y			CMPR = X - Y			Compares X with Y
018	MIN X,Y			X>Y: X = Y				Compares X with Y and puts Y in X if it's the smaller one
019	MAX X,Y			X<Y: X = Y				Compares X with Y and puts Y in X if it's the bigger one
020	INC X			X = X + 1				Increments X
021	DEC X			X = X - 1				Decrements X
022	NEG X			X = -X					Negates X
023	RAND X			X = RAND				Generates a Random Value between 0.0 and 1.0
024	LOOP X			ECX>0: JMP X; ECX--		Jump to X and decrements ECX if ECX > 0
025	LOOPA X			EAX>0: JMP X; EAX--		Jump to X and decrements EAX if EAX > 0
026	LOOPB X			EBX>0: JMP X; EBX--		Jump to X and decrements EBX if EBX > 0
027	LOOPD X			EDX>0: JMP X; EDX--		Jump to X and decrements EDX if EDX > 0
028	SPG X			SPG X					Clear Write Flag to Page X (each page are made of 128 bytes)
029	CPG X			CPG X					Set Write Flag to Page X
030	POP X			POP X					Pops Stack to X
031	CALL X			PUSH IP; JMP X			Calls a Subroutine with X
032	BNOT X			X = NOT X				Toggles bits (depending of BPREC) in X
033	FINT X			X = floor(X)			Rounds down X to the lower integer
034	FRND X			X = round(X)			Rounds down X to the nearest integer
035	FFRAC X			X = frac(X)				Returns the fractional value of X
036	FINV X			X = 1 / X				Returns the inverse of X (Triggers Error/IRQ 3 if X = 0)
038	FSHL X			X = X * 2				Shifts X to the left (equivalent to X * 2)
039	FSHR X			X = X / 2				Shifts X to the right (equivalent to X / 2)
040	RET				POP IP					Returns from a subroutine via CALL
041	IRET			(EF=1: POP CS); POP IP	Returns from Interrupt
042	STI				IF = 1					Sets Interrupt Flag (IF) after the next instruction
043	CLI				IF = 0					Clears Interrupt Flag (IF) after the next instruction
047	RETF			POP CS; POP IP			Returns from subroutine via CALLF
048	STEF			EF = 1					Sets Extended Mode (EF)
049	CLEF			EF = 0					Clears Extended Mode (EF)
050	AND X,Y			X = X AND Y				Performs logical AND operation with X and Y to X
051	OR X,Y			X = X OR Y				Performs logical OR operation with X and Y to X
052	XOR X,Y			X = X XOR Y				Performs logical XOR operation with X and Y to X
053	FSIN X,Y		X =	sin(Y)				Finds Sine of Y and puts it to X
054	FCOS X,Y		X =	cos(Y)				Finds Cosine of Y and puts it to X
055	FTAN X,Y		X =	tan(Y)				Finds Tangent of Y and puts it to X
056	FASIN X,Y		X =	arcsin(Y)			Finds ArcSine of Y and puts it to X
057	FACOS X,Y		X =	arccos(Y)			Finds ArcCosine of Y and puts it to X
058	FATAN X,Y		X =	arctan(Y)			Finds ArcTangent of Y and puts it to X
059	MOD X,Y			X =	X MOD Y				Finds remainder of X / Y and puts it to X
060	BIT X,Y			CMPR = X.bitY			Tests bit Y of X
061	SBIT X,Y		X.bitY = 1				Sets bit Y of X
062	CBIT X,Y		X.bitY = 0				Clears bit Y of X
063	TBIT X,Y		X.bitY = 1 - X.bitY		Toggles bit Y of X
064	BAND X,Y		X = X AND Y				Performs logical AND operation (depending of BPREC) with X and Y to X
065	BOR X,Y			X = X OR Y				Performs logical OR operation (depending of BPREC) with X and Y to X
066	BXOR X,Y		X = X XOR Y				Performs logical XOR operation (depending of BPREC) with X and Y to X
067	BSHL X,Y		X = X SHL Y				Shifts X by Y to the left (depending of BPREC)
068	BSHR X,Y		X = X SHR Y				Shifts X by Y to the right (depending of BPREC)
069	JMPF X,Y		IP = X; CS = Y			Jump (Far) to X at Y
070	EXTINT X		PUSH CPUSTATE			External Interrupt
071	CNE X			CNE X					Call Subroutine at X if Not Equal
071	CNZ X			CNE X					Call Subroutine at X if Not Zero
073	CG X			CG X					Call Subroutine at X if Greater
073	CNLE X			CG X					Call Subroutine at X if Not Less or Equal
074	CGE X			CGE X					Call Subroutine at X if Greater or Equal
074	CNL X			CGE X					Call Subroutine at X if Not Less
075	CL X			CL X					Call Subroutine at X if Less
075	CNGE X			CL X					Call Subroutine at X if Not Greater or Equal
076	CLE X			CLE X					Call Subroutine at X if Less or Equal
076	CNG X			CLE X					Call Subroutine at X if Not Greater
077	CE X			CE X					Call Subroutine at X if Equal
077	CZ X			CE X					Call Subroutine at X if Zero
078	MCOPY X			EDI[0,X-1] = ESI[0,X-1]	Copies X bytes from ESI to EDI
079	MXCHG X			EDI[0,X-1]<> ESI[0,X-1]	Swaps X bytes from ESI to EDI
080	FPWR X,Y		X = X ^ Y				Power X by Y
081	XCHG X,Y		Y=X; X=Y				Swaps X and Y
082	FLN X,Y									ln
083	FLOG10 X,Y								log10
084	IN X,Y			X = PORT(Y)				Reads Port Y to X
085	OUT X,Y			PORT(Y) = X				Writes X to Port Y
086	FABS X,Y		X = abs(Y)				Gets absolute value of Y to X
087	FSGN X,Y		X = sgn(Y)				Gets Signum value of Y to X
088	FEXP X,Y		X = exp(Y)				Gets Exponent value of Y to X
089	CALLF X,Y		PUSH IP,CS; IP=X; CS=Y	Call (Far) Subroutine to X at Y
090	FPI X			X = pi()				Puts Pi in X
091	FE X			X = e^(X)				Puts Exponent power X to X
092	INT X			INT X					Interrupts Number X
093	TPG X			TPG X					Toggles Write Flag to Page X
094	FCEIL X			X = ceil(X)				Rounds down X to the higher integer
095	ERPG X			ERPG X					Erase ROM Page X
096	WRPG X			WRPG X					Write ROM Page X
097	RDPG X			RDPG X					Read ROM Page X
098	TIMER X			X = TIMER				Read TIMER to X
099	LIDTR X			INT Table Offset = X	Loads Interrupt Table from X
101	JNER X			JNER X					Relative Jump to X if Not Equal
101	JNZR X			JNER X					Relative Jump to X if Not Zero
102	JMPR X			JMPR X					Relative Jump to X
103	JGR X			JGR X					Relative Jump to X if Greater
103	JNLER X			JGR X					Relative Jump to X if Not Less or Equal
104	JGER X			JGER X					Relative Jump to X if Greater or Equal
104	JNLR X			JGER X					Relative Jump to X if Not Less
105	JLR X			JLR X					Relative Jump to X if Less
105	JNGER X			JLR X					Relative Jump to X if Not Greater or Equal
106	JLER X			JLER X					Relative Jump to X if Less or Equal
106	JNGR X			JLER X					Relative Jump to X if Not Greater
107	JER X			JER X					Relative Jump to X if Equal
107	JZR X			JER X					Relative Jump to X if Zero
108	LNEG X			???						???
110	EXTRET			POP CPUSTATE			Returns from External Interrupt
111	IDLE			IDLE					???
112	NOP				NOP						No Operation
114	PUSHA			PUSH					???
115	POPA			POP						???
116	STD2			???						???
117	LEAVE			ESP=EBP-1; POP EBP		Leaves Stack Frame
118	STM				MF=1					Enables Extended Memory Mode
119	CLM				MF=0					Disables Extended Memory Mode
120	CPUGET X,Y		X=CPU(Y)				Reads CPU Register Y to X
121	CPUSET X,Y		CPU(X)=Y				Writes Y to CPU Register X
122	SPP X,Y			P(X)F(Y)=1				Sets Page X Flag Y (Y=0:Read; Y=1:Write; Y=2:Code)
123	CPP X,Y			P(X)F(Y)=0				Clears Page X Flag Y
124	SRL X,Y			PRL(X)=Y				Sets Page X RunLevel to Y
125	GRL	X,Y			X=PRL(Y)?				Gets Page Y RunLevel to X
126	LEA X,Y			???						???
127	BLOCK X,Y		BlockStart=X;BSize=Y	Sets Block Data
128	CMPAND X,Y		CMPR = X AND Y			Puts X AND Y to CMPR
129	CMPOR X,Y		CMPR = X OR Y			Puts X OR Y to CMPR
130	MSHIFT X,Y		ESI[0,X-1] SHF Y		Shifts X bytes from ESI by Y (relative, positive = right)
131	SMAP X,Y		SMAP X,Y				Remaps Page X to Page Y
132	GMAP X,Y		GMAP X,Y???				???
133	RSTACK X,Y		X = [SS+Y]				Reads from Stack+Y to X
134	SSTACK X,Y		[SS+X] = Y				Writes Y to Stack+X
135	ENTER X			PUSH EBP; EBP=ESP+1; ESP=ESP-X	Enters into Stack Frame
250	VADD X,Y								Adds Vectors
251	VSUB X,Y								Subtracts Vectors
252	VMUL X,Y								Multiplies Vectors
253	VDOT X,Y								Vector-related
254	VCROSS X,Y								Vector-related
255	VMOV X,Y								Copies Vector Y to X
256	VNORM X,Y								Vector-related
257	VCOLORNORM X,Y							Vector-related
259	LOOPXY X,Y								If EDX>0 then IP=X, if ECX>0 then ECX-- else EDX--; ECX=Y
260	MADD X,Y								Adds Matrixes
261	MSUB X,Y								Subtracts Matrixes
262	MMUL X,Y								Multiplies Matrixes
263	MROTATE X,Y								Rotates Y to Matrix
264	MSCALE X,Y								Scales Y to Matrix
265	MPERSPECTIVE X,Y						Matrix-related
266	MTRANSLATE X,Y							Matrix-related
267	MLOOKAT X,Y								Matrix-related
268	MMOV X,Y								Copies Matrix Y to X
269	VLEN X,Y								Vector-related
270	MIDENT X								Identifies Matrix X
273	VMODE X			VMODE = X				Sets VMODE to X
295	VDIV X,Y								Divides Vectors
296	VTRANSFORM X,Y							Vector-related