Write to command registers. More...

Collaboration diagram for VDP commands (Low level APIs):

Data Structures
struct	vdp_cmd
	Parameters for VDP commands. More...

Enumerations
enum	vdp_cmd_op { VDP_CMD_STOP = 0x00 , VDP_CMD_POINT = 0x40 , VDP_CMD_PSET = 0x50 , VDP_CMD_SRCH = 0x60 , VDP_CMD_LINE = 0x70 , VDP_CMD_LMMV = 0x80 , VDP_CMD_LMMM = 0x90 , VDP_CMD_LMCM = 0xa0 , VDP_CMD_LMMC = 0xb0 , VDP_CMD_HMMV = 0xc0 , VDP_CMD_HMMM = 0xd0 , VDP_CMD_YMMM = 0xe0 , VDP_CMD_HMMC = 0xf0 }
	Enumeration of operation codes for VDP commands. More...

Functions
void	vdp_cmd_set_SX (struct vdp_cmd *c, uint16_t sx)
	`MSX2` Set SX value (x-coordinate of the source point) for VDP commands.

void	vdp_cmd_set_SY (struct vdp_cmd *c, uint16_t sy)
	`MSX2` Set SY value (y-coordinate of the source point) for VDP commands.

void	vdp_cmd_set_DX (struct vdp_cmd *c, uint16_t dx)
	`MSX2` Set DX value (x-coordinate of the destination point) for VDP commands.

void	vdp_cmd_set_DY (struct vdp_cmd *c, uint16_t dy)
	`MSX2` Set DY value (y-coordinate of the destination point) for VDP commands.

void	vdp_cmd_set_NX (struct vdp_cmd *c, uint16_t nx)
	`MSX2` Set NX value (width) for VDP commands.

void	vdp_cmd_set_NY (struct vdp_cmd *c, uint16_t ny)
	`MSX2` Set NY value (height) for VDP commands.

void	vdp_cmd_set_CLR (struct vdp_cmd *c, uint8_t clr)
	`MSX2` Set CLR value (color) for VDP commands.

void	vdp_cmd_set_ARG (struct vdp_cmd *c, uint8_t arg)
	`MSX2` Set ARG value (DIX, DIY, etc.) for VDP commands.

void	vdp_cmd_set_logop (struct vdp_cmd *c, enum vdp_cmd_logop logop)
	`MSX2` Set a logical operation code for VDP commands.

void	vdp_cmd_execute (const struct vdp_cmd *c, enum vdp_cmd_op opcode)
	`MSX2` Executes a VDP command.

Detailed Description

Write to command registers.

Data Structure Documentation

◆ vdp_cmd

struct vdp_cmd

Parameters for VDP commands.

See also: vdp_cmd_execute()

Definition at line 1155 of file vdp.h.

Data Fields
uint8_t	r32	SX (lo)
uint8_t	r33	SX (hi)
uint8_t	r34	SY (lo)
uint8_t	r35	SY (hi)
uint8_t	r36	DX (lo)
uint8_t	r37	DX (hi)
uint8_t	r38	DY (lo)
uint8_t	r39	DY (hi)
uint8_t	r40	NX (lo)
uint8_t	r41	NX (hi)
uint8_t	r42	NY (lo)
uint8_t	r43	NY (hi)
uint8_t	r44	CLR (2bpp * 4 pix, 4bpp * 2 pix, or 8bpp * 1 pix)
uint8_t	r45	ARG (0000b \| DIY \| DIX \| 00b)
uint8_t	r46	CMR (op \| logop)

Enumeration Type Documentation

◆ vdp_cmd_op

enum vdp_cmd_op

Enumeration of operation codes for VDP commands.

See also: vdp_cmd_execute()

Enumerator
VDP_CMD_STOP	Operation code "STOP" : Stop the running VDP command. See also vdp_cmd_stop()
VDP_CMD_POINT	Operation code "POINT" : Read color code at the given point. See also vdp_cmd_execute_POINT()
VDP_CMD_PSET	Operation code "PSET" : Write color code at the given point. See also vdp_cmd_execute_PSET()
VDP_CMD_SRCH	Operation code "SRCH" : Search color code from the given point towards left/right. See also vdp_cmd_execute_SRCH()
VDP_CMD_LINE	Operation code "LINE" : Draw line w/ logical operation. See also vdp_cmd_execute_LINE()
VDP_CMD_LMMV	Operation code "LMMV" : Fill rectangular area w/ logical operation. See also vdp_cmd_execute_LMMV()
VDP_CMD_LMMM	Operation code "LMMM" : Copy rectangular area from VRAM to VRAM w/ logical operation. See also vdp_cmd_execute_LMMM()
VDP_CMD_LMCM	Operation code "LMCM" : VRAM to CPU logical transfer. See also vdp_cmd_execute_LMCM()
VDP_CMD_LMMC	Operation code "LMMC" : CPU to VRAM logical transfer. See also vdp_cmd_execute_LMMC()
VDP_CMD_HMMV	Operation code "HMMV" : Fill rectangular area. See also vdp_cmd_execute_HMMV()
VDP_CMD_HMMM	Operation code "HMMM" : Copy rectangular area from VRAM to VRAM. See also vdp_cmd_execute_HMMM()
VDP_CMD_YMMM	Operation code "YMMM" : Copy rectangular area from VRAM to VRAM vertically. See also vdp_cmd_execute_YMMM()
VDP_CMD_HMMC	Operation code "HMMC" : CPU to VRAM high speed transfer. See also vdp_cmd_execute_HMMC()

Definition at line 1082 of file vdp.h.

Function Documentation

◆ vdp_cmd_set_SX()

void vdp_cmd_set_SX	(	struct vdp_cmd *	c,
		uint16_t	sx
	)

inline

MSX2 Set SX value (x-coordinate of the source point) for VDP commands.

Parameters

c	pointer to `struct vdp_cmd`.
sx	SX value.

See also: vdp_cmd_execute()

Definition at line 1181 of file vdp.h.

◆ vdp_cmd_set_SY()

void vdp_cmd_set_SY	(	struct vdp_cmd *	c,
		uint16_t	sy
	)

inline

MSX2 Set SY value (y-coordinate of the source point) for VDP commands.

Parameters

c	pointer to `struct vdp_cmd`.
sy	SY value.

See also: vdp_cmd_execute()

Definition at line 1194 of file vdp.h.

◆ vdp_cmd_set_DX()

void vdp_cmd_set_DX	(	struct vdp_cmd *	c,
		uint16_t	dx
	)

inline

MSX2 Set DX value (x-coordinate of the destination point) for VDP commands.

Parameters

c	pointer to `struct vdp_cmd`.
dx	DX value.

See also: vdp_cmd_execute()

Definition at line 1207 of file vdp.h.

◆ vdp_cmd_set_DY()

void vdp_cmd_set_DY	(	struct vdp_cmd *	c,
		uint16_t	dy
	)

inline

MSX2 Set DY value (y-coordinate of the destination point) for VDP commands.

Parameters

c	pointer to `struct vdp_cmd`.
dy	DY value.

See also: vdp_cmd_execute()

Definition at line 1220 of file vdp.h.

◆ vdp_cmd_set_NX()

void vdp_cmd_set_NX	(	struct vdp_cmd *	c,
		uint16_t	nx
	)

inline

MSX2 Set NX value (width) for VDP commands.

Parameters

c	pointer to `struct vdp_cmd`.
nx	NX value.

See also: vdp_cmd_execute()

Definition at line 1233 of file vdp.h.

◆ vdp_cmd_set_NY()

void vdp_cmd_set_NY	(	struct vdp_cmd *	c,
		uint16_t	ny
	)

inline

MSX2 Set NY value (height) for VDP commands.

Parameters

c	pointer to `struct vdp_cmd`.
ny	NY value.

See also: vdp_cmd_execute()

Definition at line 1246 of file vdp.h.

◆ vdp_cmd_set_CLR()

void vdp_cmd_set_CLR	(	struct vdp_cmd *	c,
		uint8_t	clr
	)

inline

MSX2 Set CLR value (color) for VDP commands.

Parameters

c	pointer to `struct vdp_cmd`.
clr	CLR value.

See also: vdp_cmd_execute()

Definition at line 1259 of file vdp.h.

◆ vdp_cmd_set_ARG()

void vdp_cmd_set_ARG	(	struct vdp_cmd *	c,
		uint8_t	arg
	)

inline

MSX2 Set ARG value (DIX, DIY, etc.) for VDP commands.

Parameters

c	pointer to `struct vdp_cmd`.
arg	ARG value.

See also: vdp_cmd_execute()

Definition at line 1271 of file vdp.h.

◆ vdp_cmd_set_logop()

void vdp_cmd_set_logop	(	struct vdp_cmd *	c,
		enum vdp_cmd_logop	logop
	)

inline

MSX2 Set a logical operation code for VDP commands.

Parameters

c	pointer to `struct vdp_cmd`.
logop	a logical operation code.

See also: vdp_cmd_execute()

Definition at line 1283 of file vdp.h.

◆ vdp_cmd_execute()

void vdp_cmd_execute	(	const struct vdp_cmd *	c,
		enum vdp_cmd_op	opcode
	)

MSX2 Executes a VDP command.

Requests the VDP to execute a VDP command. When a previous VDP command is still running, this function waits for the command to finish before requesting. Therefore you need not to call vdp_cmd_await() before calling vdp_cmd_execute().

Before calling this function, all parameters for the VDP command must be set to the struct vdp_cmd object pointed by the 1st argument c.

To set parameters, you may use the following inline functions:

After calling this function, if you want to wait for the VDP command to finish, call vdp_cmd_await().

Parameters

c	pointer to `struct vdp_cmd`.
opcode	an operation code.

See also: vdp_cmd_await(); vdp_cmd_set_SX(); vdp_cmd_set_SY(); vdp_cmd_set_DX(); vdp_cmd_set_DY(); vdp_cmd_set_NX(); vdp_cmd_set_NY(); vdp_cmd_set_CLR(); vdp_cmd_set_ARG(); vdp_cmd_set_logop()

Data Structures

Enumerations

Functions

Detailed Description

Data Structure Documentation

◆ vdp_cmd

Enumeration Type Documentation

◆ vdp_cmd_op

Function Documentation

◆ vdp_cmd_set_SX()

◆ vdp_cmd_set_SY()

◆ vdp_cmd_set_DX()

◆ vdp_cmd_set_DY()

◆ vdp_cmd_set_NX()

◆ vdp_cmd_set_NY()

◆ vdp_cmd_set_CLR()

◆ vdp_cmd_set_ARG()

◆ vdp_cmd_set_logop()

◆ vdp_cmd_execute()