eForth Virtual Machine module header More...

#include "eforth_core.h"

Include dependency graph for eforth_vm.h:

This graph shows which files directly or indirectly include this file:

Namespaces
	EfVM

Macros
#define	RAM_FLAG 0xe000

#define	IDX_MASK 0x07ff

#define	IRET_FLAG 0x8000

#define	BOOL(f) ((f) ? TRUE : FALSE)

#define	RAM(i) &_ram[(i) - FORTH_RAM_ADDR]

#define	BSET(d, c) (_ram[(d)&IDX_MASK]=(U8)(c))

#define	S2D(h, l) (((S32)(h)<<16) \| ((l)&0xffff))

#define	DEPTH() ((DU)((U8*)DS - RAM(FORTH_STACK_ADDR)) >> 1)

#define	PUSH(v) { *++DS = top; top = (v); }

#define	RPUSH(v) { *--RS = rtop; rtop = (v); }

#define	POP() (top = *DS--)

#define	RPOP() (rtop = *RS++)

#define	DTOP(d) { *DS = (d)&0xffff; top = (d)>>16; }

Tracing
#define	DEBUG(s, v)

#define	TAB() /* skip */

#define	TRACE(op, ip, w, t, s) /* skip */

Functions
U8	EfVM::BGET (U16 d)

U16	EfVM::GET (U16 d)

void	EfVM::SET (U16 d, U16 v)

Detailed Description

eForth Virtual Machine module header

eForth Memory map

0x0000-0x1fff ROM (8K Flash memory)
0x2000-0x24ff RAM (2K dynamic memory)
    0x2000-0x201f User Variables
    0x2020-0x23ff User Dictionary
    0x2400-0x247f Data/Return Stacks
    0x2480-0x24ff TIB (Terminal Input Buffer)
    0x2500        heap

Data and Return Stack

        S                   R
        |                   |
top -> [S0, S1, S2,..., R1, R0] <- rtop

Note: Dr. Ting uses U8 (0~255) for wrap-around control

Macro Definition Documentation

◆ RAM_FLAG

#define RAM_FLAG 0xe000

RAM ranger (0x2000~0x7fff)

◆ IDX_MASK

#define IDX_MASK 0x07ff

RAM index mask (0x0000~0x07ff)

◆ IRET_FLAG

#define IRET_FLAG 0x8000

interrupt return flag

◆ BOOL

#define BOOL ( f ) ((f) ? TRUE : FALSE)

◆ RAM

#define RAM ( i ) &_ram[(i) - FORTH_RAM_ADDR]

◆ BSET

#define BSET	(	d,
		c
	)	(_ram[(d)&IDX_MASK]=(U8)(c))

◆ S2D

#define S2D	(	h,
		l
	)	(((S32)(h)<<16) \| ((l)&0xffff))

◆ DEPTH

#define DEPTH ( ) ((DU)((U8*)DS - RAM(FORTH_STACK_ADDR)) >> 1)

push a value onto stack top

◆ PUSH

#define PUSH ( v ) { *++DS = top; top = (v); }

◆ RPUSH

#define RPUSH ( v ) { *--RS = rtop; rtop = (v); }

◆ POP

#define POP ( ) (top = *DS--)

◆ RPOP

#define RPOP ( ) (rtop = *RS++)

◆ DTOP

#define DTOP ( d ) { *DS = (d)&0xffff; top = (d)>>16; }

◆ DEBUG

#define DEBUG	(	s,
		v
	)

◆ TAB

#define TAB ( ) /* skip */

◆ TRACE

#define TRACE	(	op,
		ip,
		w,
		t,
		s
	)	/* skip */

Namespaces

Macros

Functions