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mytest.c
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/*
___________________________________________________________
/ \
| Screen 8 side scroller |
\___________________________________________________________/
*/
//
// Works on MSX2 and upper
// Need external files
//
#define __SDK_OPTIMIZATION__ 1
#define CPULOAD
// #define VDPLOAD
// #define WBORDER
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include "header\msx_fusion.h"
#include "header\vdp_graph2.h"
#include "header\myheader.h"
static FCB file; // Init the FCB Structure varaible
static FastVDP MyCommand;
static FastVDP MyBorder;
unsigned char page; // VDP active page
signed int WLevelx; // (X,Y) position in the level map 4096x192 of
unsigned char WLevely; // the 240x176 window screen
unsigned char LevelW; // size of the actual map in tile (initialised at level change
unsigned char LevelH;
signed int WLevelDX; // scrolling direction and speed F8.8 on X
signed int WLevelDY; // scrolling direction and speed F8.8 on Y
#define MaxLevelW 256U // Max size of the map in tile
#define MaxLevelH 11U
#define WindowW 240U // size of the screen in pixels
#define WindowH 176U
unsigned char newx,page;
unsigned char OldIsr[3];
unsigned char LevelMap[MaxLevelW*MaxLevelH];
unsigned char buffer[256*8];
char cursat = 0;
/*
SAT0 = 0FA00h ; R5 = F7h;R11 = 01h
SAT1 = 1FA00h ; R5 = F7h;R11 = 03h
SPG = 0F000h ; R6 = 1Eh
*/
void main(void)
{
unsigned char rd;
rd = ReadMSXtype(); // Read MSX Type
if (rd==0) FT_errorHandler(3,"msx 1 "); // If MSX1 got to Error !
MyLoadTiles("tile0.bin"); // load tile set in segments 4,5,6,7 at 0x8000
MyLoadMap("datamap.bin",LevelMap); // load level map 256x11 arranged by columns
// printf("\n\rLevelW: %d%\n\r",LevelW);
// printf("LevelH: %d%\n\r",LevelH);
Screen(8); // Init Screen 8
myVDPwrite(0,7); // borders
VDPlineSwitch(); // 192 lines
VDP60Hz();
HMMV(0,0,256,512, 0); // Clear all VRAM by Byte 0 (Black)
DisableInterrupt();
VDPready(); // wait for command completion
EnableInterrupt();
ObjectsInit(); // initialise logical object
SprtInit(); // initialize sprites in VRAM
myInstISR(); // install a fake ISR to cut the overhead
page = 0;
mySetAdjust(0,8); // same as myVDPwrite((0-8) & 15,18);
for (WLevelx = 0;WLevelx<0+WindowW;) {
myFT_wait(1);
NewLine(WLevelx,0,WLevelx);WLevelx++;
NewLine(WindowW-WLevelx,0,WindowW-WLevelx); WLevelx++;
NewLine(WLevelx,0,WLevelx);WLevelx++;
NewLine(WindowW-WLevelx,0,WindowW-WLevelx); WLevelx++;
}
WLevelx = 0;
MyBorder.ny = WindowH;
MyBorder.col = 0;
MyBorder.param = 0;
MyBorder.cmd = opHMMV;
MyCommand.ny = WindowH;
MyCommand.col = 0;
MyCommand.param = 0;
MyCommand.cmd = opHMMM;
while (myCheckkbd(7)==0xFF)
{
WaitLineInt(); // wait for line 176
SwapSat(); // swap sat 0 and sat 1
if ((myCheckkbd(8)==0x7F) && (WLevelx<16*(LevelW-15))) {
WLevelx++;
ObjectstoVRAM(WLevelx);
ScrollRight(WLevelx & 15);
}
else if ((myCheckkbd(8)==0xEF) && (WLevelx>0)) {
WLevelx--;
ObjectstoVRAM(WLevelx);
ScrollLeft(WLevelx & 15);
}
else {
ObjectstoVRAM(WLevelx);
}
}
myISRrestore();
Screen(0);
Exit(0);
}
void ScrollRight(char step) __sdcccall(1)
{
// from left to right
myVDPwrite((step-8) & 15,18);
switch (step) {
case 0:
page ^=1; // case 0
SetDisplayPage(page);
MyBorder.dx = 240;
MyBorder.nx = 15;
MyBorder.dy = 256*page;
myfVDP(&MyBorder);
BorderLinesR(WindowW-1,page, WLevelx+WindowW-1);
break;
default: // case 1-15
MyCommand.sx = 16*step;
MyCommand.dx = MyCommand.sx - 16;;
MyCommand.sy = 256*page;
MyCommand.dy = MyCommand.sy ^ 256;
MyCommand.nx = 16;
myfVDP(&MyCommand);
BorderLinesR(step+WindowW-1,page,WLevelx+WindowW-1);
break;
}
if (step==15) PatchPlotOneTile(step+WindowW-1-16,page^1,WLevelx+WindowW-1);
}
void ScrollLeft(char step) __sdcccall(1)
{
// from right to left
myVDPwrite((step-8) & 15,18);
switch (step) {
case 15:
page ^=1;
SetDisplayPage(page); // case 15
MyBorder.dx = 0;
MyBorder.nx = 15;
MyBorder.dy = 256*page;
myfVDP(&MyBorder);
BorderLinesL(step,page,WLevelx);
break;
default: // case 14-0
MyCommand.sx = 16*step;
MyCommand.dx = MyCommand.sx + 16;
MyCommand.sy = 256*page;
MyCommand.dy = MyCommand.sy ^ 256;
MyCommand.nx = 16;
myfVDP(&MyCommand);
BorderLinesL(step,page,WLevelx);
break;
}
if (step==0) PatchPlotOneTile(16,page^1,WLevelx);
}
static unsigned char *p;
__at(0xF3DF) unsigned char RG0SAV;
__at(0xF3E0) unsigned char RG1SAV;
__at(0xFFE7) unsigned char RG8SAV;
__at(0xFFE8) unsigned char RG9SAV;
__at(0xFFE9) unsigned char RG10SA;
__at(0xFFEA) unsigned char RG11SA;
__at(0xFFEB) unsigned char RG12SA;
__at(0xFFEC) unsigned char RG13SA;
__at(0xFFED) unsigned char RG14SA;
__at(0xFFEE) unsigned char RG15SA;
__at(0xFFEF) unsigned char RG16SA;
__at(0xFFF0) unsigned char RG17SA;
__at(0xFFF1) unsigned char RG18SA;
void PlotOneColumnTile(void) __sdcccall(1)
{
__asm
exx
ld hl,(_p)
ld a,(hl)
rlca
rlca
and a,#3
add a,#4
out (#0xfe),a ; set segment in 4..7
ld a,(hl)
inc hl
ld (_p),hl ; save next tile
and a,#0x3F ; tile number
add a,#0x80 ; address of the segment
ld h,a ; address of the tile in the segment
ld l,d
exx
.rept #16
out (c),e ; set vram address in 14 bits
out (c),d
inc d ; new line
exx
outi ; write data
exx
.endm
__endasm;
}
void PlotOneColumnTileAndMask(void) __sdcccall(1)
{
__asm
exx
ld hl,(_p)
ld a,(hl)
rlca
rlca
and a,#3
add a,#4
out (#0xfe),a ; set segment in 4..7
ld a,(hl)
inc hl
ld (_p),hl ; save next tile
and a,#0x3F ; tile number
add a,#0x80 ; address of the segment
ld h,a ; address of the tile in the segment
ld l,d
exx
.rept #16
out (c),e ; set vram address in 14 bits
out (c),d
exx
outi ; write data
exx
out (c),l ; set vram address in 14 bits for border
out (c),d
inc d ; new line
xor a,a ; write border
out (#0x98),a
.endm
__endasm;
}
void BorderLinesL(unsigned char ScrnX,char page, int MapX) __sdcccall(1) __naked
{
ScrnX;
page;
MapX;
__asm
pop bc ; get ret address
pop de ; de = MapX
push bc ; save ret address
ex af,af' ; a' = ScrnX
ld a,l ; l = page
add a,a
add a,a
ld (_RG14SA),a
ld c,e ; C = low(mapx)
sra d ; DE/16
rr e
sra d
rr e
sra d
rr e
sra d
rr e
ld l,e
ld h,d
add hl,hl
add hl,hl
add hl,de
add hl,hl
add hl,de ; DE/16 * 11
ld de,#_LevelMap
add hl,de
ld (_p), hl
#ifdef CPULOAD
ld a,#0xC0 ; color test
out (#0x99), a
ld a,#0x87
out (#0x99), a
#endif
ex af,af' ; a' = ScrnX
ld e,a ; DE vramm address for new border data
add a,#240 ; L = E +/- 240U according to the scroll direction
ld l,a ; DL hold vramm address for blank border
ld a,c ; C = low(MapX)
and a,#15
add a,a
add a,a
add a,a
add a,a
exx
ld d,a ; common offeset of the address in the tile
ld c,#0x98 ; used by _PlotOneColumnTileAndMask
exx
di
ld a,(_RG14SA) ; set address in vdp(14)
out (#0x99), a
inc a
ld (_RG14SA),a ; save next block
ld a,#0x8E
out (#0x99), a
ld c,#0x99
ld d,#0x40
call _PlotOneColumnTileAndMask ; plot 4 tiles
call _PlotOneColumnTileAndMask
call _PlotOneColumnTileAndMask
call _PlotOneColumnTileAndMask
ld a,(_RG14SA) ; set address in vdp(14)
out (#0x99), a
inc a
ld (_RG14SA),a ; save next block
ld a,#0x8E
out (#0x99), a
ld d,#0x40
call _PlotOneColumnTileAndMask ; plot 4 tiles
call _PlotOneColumnTileAndMask
call _PlotOneColumnTileAndMask
call _PlotOneColumnTileAndMask
ld a,(_RG14SA) ; set address in vdp(14)
out (#0x99), a
ld a,#0x8E
out (#0x99), a
ld d,#0x40
call _PlotOneColumnTileAndMask ; plot 3 tiles
call _PlotOneColumnTileAndMask
call _PlotOneColumnTileAndMask
ld a,#1
out (#0xfe),a ; restore page 1
#ifdef CPULOAD
xor a,a ; color test
out (#0x99), a
ld a,#0x87
out (#0x99), a
#endif
ei
ret
__endasm;
}
void BorderLinesR(unsigned char ScrnX,char page, int MapX) __sdcccall(1) __naked
{
ScrnX;
page;
MapX;
__asm
pop bc ; get ret address
pop de ; DE = MapX+WindowW
push bc ; save ret address
ex af,af' ; a' = ScrnX
ld a,l ; l = page
add a,a
add a,a
ld (_RG14SA),a
ld c,e ; C = low(mapx)
sra d ; DE/16
rr e
sra d
rr e
sra d
rr e
sra d
rr e
ld l,e
ld h,d
add hl,hl
add hl,hl
add hl,de
add hl,hl
add hl,de ; DE/16 * 11
ld de,#_LevelMap
add hl,de
ld (_p), hl
#ifdef CPULOAD
ld a,#0xC0 ; color test
out (#0x99), a
ld a,#0x87
out (#0x99), a
#endif
ex af,af' ; a' = ScrnX
ld e,a ; DE vramm address for new border data
sub a,#240 ; L = E +/- 240U according to the scroll direction
ld l,a ; DL hold vramm address for blank border
ld a,c ; C = low(MapX)
and a,#15
add a,a
add a,a
add a,a
add a,a
exx
ld d,a ; common offeset of the address in the tile
ld c,#0x98 ; used by _PlotOneColumnTileAndMask
exx
di
ld a,(_RG14SA) ; set address in vdp(14)
out (#0x99), a
inc a
ld (_RG14SA),a ; save next block
ld a,#0x8E
out (#0x99), a
ld c,#0x99
ld d,#0x40
call _PlotOneColumnTileAndMask ; plot 4 tiles
call _PlotOneColumnTileAndMask
call _PlotOneColumnTileAndMask
call _PlotOneColumnTileAndMask
ld a,(_RG14SA) ; set address in vdp(14)
out (#0x99), a
inc a
ld (_RG14SA),a ; save next block
ld a,#0x8E
out (#0x99), a
ld d,#0x40
call _PlotOneColumnTileAndMask ; plot 4 tiles
call _PlotOneColumnTileAndMask
call _PlotOneColumnTileAndMask
call _PlotOneColumnTileAndMask
ld a,(_RG14SA) ; set address in vdp(14)
out (#0x99), a
ld a,#0x8E
out (#0x99), a
ld d,#0x40
call _PlotOneColumnTileAndMask ; plot 3 tiles
call _PlotOneColumnTileAndMask
call _PlotOneColumnTileAndMask
ld a,#1
out (#0xfe),a ; restore page 1
#ifdef CPULOAD
xor a,a ; color test
out (#0x99), a
ld a,#0x87
out (#0x99), a
#endif
ei
ret
__endasm;
}
void NewLine(unsigned char ScrnX,char page, int MapX) __sdcccall(1) __naked
{
ScrnX;
page;
MapX;
__asm
pop bc ; get ret address
pop de ; de = MapX
push bc ; save ret address
ex af,af' ; a' = ScrnX
ld a,l ; l = page
add a,a
add a,a
ld (_RG14SA),a
ld c,e ; C = low(mapx)
sra d ; DE/16
rr e
sra d
rr e
sra d
rr e
sra d
rr e
ld l,e
ld h,d
add hl,hl
add hl,hl
add hl,de
add hl,hl
add hl,de ; DE/16 * 11
ld de,#_LevelMap
add hl,de
ld (_p), hl
#ifdef CPULOAD
ld a,#0xC0 ; color test
out (#0x99), a
ld a,#0x87
out (#0x99), a
#endif
ex af,af' ; a' = ScrnX
ld e,a ; DE vramm address for new border data
ld a,c ; C = low(MapX)
and a,#15
add a,a
add a,a
add a,a
add a,a
exx
ld d,a ; common offeset of the address in the tile
ld c,#0x98 ; used by _PlotOneColumnTile
exx
di
ld a,(_RG14SA) ; set address in vdp(14)
out (#0x99), a
inc a
ld (_RG14SA),a ; save next block
ld a,#0x8E
out (#0x99), a
ld c,#0x99
ld d,#0x40
call _PlotOneColumnTile ; 4 tiles
call _PlotOneColumnTile
call _PlotOneColumnTile
call _PlotOneColumnTile
ld a,(_RG14SA) ; set address in vdp(14)
out (#0x99), a
inc a
ld (_RG14SA),a ; save next block
ld a,#0x8E
out (#0x99), a
ld d,#0x40
call _PlotOneColumnTile ; 4 tiles
call _PlotOneColumnTile
call _PlotOneColumnTile
call _PlotOneColumnTile
ld a,(_RG14SA) ; set address in vdp(14)
out (#0x99), a
ld a,#0x8E
out (#0x99), a
ld d,#0x40
call _PlotOneColumnTile ; 3 tiles
call _PlotOneColumnTile
call _PlotOneColumnTile
ld a,#1
out (#0xfe),a ; restore page 1
#ifdef CPULOAD
xor a,a ; color test
out (#0x99), a
ld a,#0x87
out (#0x99), a
#endif
ei
ret
__endasm;}
void PatchPlotOneTile(unsigned char ScrnX,char page, int MapX) __sdcccall(1) __naked
{
ScrnX;
page;
MapX;
__asm
pop bc ; get ret address
pop de ; DE = MapX
push bc ; save ret address
ex af,af' ; a' = ScrnX
ld a,l ; l = page
add a,a
add a,a
ld (_RG14SA),a
ld c,e ; C = low(mapx)
sra d ; DE/16
rr e
sra d
rr e
sra d
rr e
sra d
rr e
ld l,e
ld h,d
add hl,hl
add hl,hl
add hl,de
add hl,hl
add hl,de ; DE/16 * 11
ld de,#_LevelMap
add hl,de
ld (_p), hl
ex af,af' ; a' = ScrnX
ld e,a ; DE vramm address for new border data
ld a,c ; C = low(MapX)
and a,#15
add a,a
add a,a
add a,a
add a,a
exx
ld d,a ; common offeset of the address in the tile
ld c,#0x98 ; used by _PlotOneColumnTile
exx
di
#ifdef CPULOAD
ld a,#0xC0 ; color test
out (#0x99), a
ld a,#0x87
out (#0x99), a
#endif
ld a,(_RG14SA) ; set address in vdp(14)
out (#0x99), a
ld a,#0x8E
out (#0x99), a
ld d,#0x40
ld c,#0x99
call _PlotOneColumnTile ; 1 tile
ld a,#1
out (#0xfe),a ; restore page 1
#ifdef CPULOAD
xor a,a ; color test
out (#0x99), a
ld a,#0x87
out (#0x99), a
#endif
ei
ret
__endasm;
}
void myVDPwrite(char data, char vdpreg) __sdcccall(1) __naked
{
vdpreg;
data;
__asm
di
out (#0x99),a
ld a,#128
or a,l
out (#0x99),a ;R#A := L
ei
ret
__endasm;
}
unsigned char myInPort(unsigned char port) __sdcccall(1) __naked __preserves_regs(b,h,l,d,e,iyl,iyh)
{
port;
__asm
ld c, a ; port
in a, (c) ; return value in A
ret
__endasm;
}
void myOutPort(unsigned char port,unsigned char data) __sdcccall(1) __naked __preserves_regs(a,b,h,l,d,e,iyl,iyh)
{
port;
data;
__asm
ld c, a ; port in A
out (c),l ; value in L
ret
__endasm;
}
void myfVDP(void *Address) __sdcccall(1) __naked
{
Address;
__asm
di
ld a,#32 ; Start with Reg 32
out (#0x99),a
ld a,#128+#17
out (#0x99),a ;R#17 := 32
ld c,#0x9b ; c=#0x9b
fvdpWait:
ld a,#2
out (#0x99),a
ld a,#128+#15
out (#0x99),a
in a,(#0x99)
rrca
jp c, fvdpWait ; wait CE
.rept #15
OUTI
.endm
xor a,a ; set Status Register #0 for reading
out (#0x99),a
ld a,#0x8f
out (#0x99),a
ei
ret
__endasm;
}
/*
char myPoint( unsigned int X, unsigned int Y ) __sdcccall(1) __naked
{
X,Y;
__asm
; hl = m
; de = n
di
ld a,#32
out (#0x99),a
ld a,#128+#17
out (#0x99),a ;R#17 := 32
ld c,#0x9b
out (c),l ; R32 DX low byte
out (c),h ; R33 DX high byte
out (c),e ; R34 DY low byte
out (c),d ; R35 DY high byte
ld a,#0b01000000 ; Point command
out (#0x99),a
ld a,#128+#46
out (#0x99),a
ld a,#7 ; set Status Register #7 for reading
out (#0x99),a
ld a,#0x8f
out (#0x99),a
in a,(#0x99)
ld l,a
xor a ; set Status Register #0 for reading
out (#0x99),a
ld a,#0x8f
out (#0x99),a
ei
ld a,l
ret
__endasm;
}
*/
/* --------------------------------------------------------- */
/* SETADJUST Adjust screen offset */
/* --------------------------------------------------------- */
void mySetAdjust(signed char x, signed char y) __sdcccall(1)
{
unsigned char value = ((x-8) & 15) | (((y-8) & 15)<<4);
RG18SA = value; // Reg18 Save
myVDPwrite(value,18);
}
/* ---------------------------------
FT_Wait
Waiting
-----------------------------------*/
void myFT_wait(unsigned char cicles) __sdcccall(1) __naked {
cicles;
__asm
#ifdef VDPLOAD
push af
ld l,#7
ld a,#12
call _myVDPwrite
di
call _VDPready
ei
ld l,#7
xor a,a
call _myVDPwrite
pop af
#endif
or a, a
00004$:
ret Z
halt
dec a
jp 00004$
__endasm;
}
void WaitLineInt(void) __sdcccall(1) __naked {
__asm
#ifdef VDPLOAD
ld l,#7
ld a,#12
call _myVDPwrite
di
call _VDPready
ei
ld l,#7
xor a,a
call _myVDPwrite
#endif
di
ld a,#1 ; set Status Register #1 for reading
out (#0x99),a
ld a,#0x8f
out (#0x99),a
WaitLI:
in a,(#0x99)
rrca
jr nc,WaitLI
xor a,a ; set Status Register #0 for reading
out (#0x99),a
ld a,#0x8f
out (#0x99),a
ei
ret
__endasm;
}
/* ---------------------------------
FT_SetName
Set the name of a file to load
(MSX DOS)
-----------------------------------*/
void FT_SetName( FCB *p_fcb, const char *p_name ) __sdcccall(1)
{
char i, j;
memset( p_fcb, 0, sizeof(FCB) );
for( i = 0; i < 11; i++ ) {
p_fcb->name[i] = ' ';
}
for( i = 0; (i < 8) && (p_name[i] != 0) && (p_name[i] != '.'); i++ ) {
p_fcb->name[i] = p_name[i];
}
if( p_name[i] == '.' ) {
i++;
for( j = 0; (j < 3) && (p_name[i + j] != 0) && (p_name[i + j] != '.'); j++ ) {
p_fcb->ext[j] = p_name[i + j] ;
}
}
}
/* ---------------------------------
FT_errorHandler
In case of Error
-----------------------------------*/
void FT_errorHandler(char n, char *name) __sdcccall(1)
{
Screen(0);
SetColors(15,6,6);
switch (n)
{
case 1:
Print("\n\rFAILED: fcb_open(): ");
Print(name);
break;
case 2:
Print("\n\rFAILED: fcb_close():");
Print(name);
break;
case 3:
Print("\n\rStop Kidding, run me on MSX2 !");
break;
case 4:
Print("\n\rUnespected end of file:");
Print(name);
break;
}
Exit(0);
}
/* ---------------------------------
FT_LoadSc8Image
Load a SC8 Picture and put datas
on screen, begining at start_Y line
-----------------------------------*/
/*
char myFT_LoadSc8Image(char *file_name, unsigned int start_Y, char *buffer) __sdcccall(1)
{
unsigned int rd,nbl;
FT_SetName( &file, file_name );
if(fcb_open( &file ) != FCB_SUCCESS) {
FT_errorHandler(1, file_name);
return (0);
}
rd = fcb_read( &file, buffer, 8 ); // Skip 7 first bytes of the file FIX STRANGE OFFSET
while(rd!=0) {
rd = fcb_read( &file, buffer, 256U*192U ); // 192 lines of 256 bytes
if (rd!=0) {
nbl=rd/256;
HMMC(buffer, 0,start_Y,256,nbl ); // Move the buffer to VRAM. mbl lines x 256 pixels from memory
start_Y += nbl;
}
}
if( fcb_close( &file ) != FCB_SUCCESS ) {
FT_errorHandler(2, file_name);
return (0);
}
return(1);
}
*/
////////////////////////////////////////////////////////////
char MyLoadTiles(char *file_name) __sdcccall(1)
{
unsigned int rd;
unsigned char n,m;
for (n=0;n<4;n++) {
FT_SetName( &file, file_name );
if(fcb_open( &file ) != FCB_SUCCESS) {
FT_errorHandler(1, file_name);
return (0);
}
for (m=0;m<8;m++) { // 64 tiles of 256 bytes
rd = fcb_read( &file, buffer, 256U*8U );
myOutPort(0xFE,4+n);
memmove((unsigned char*) 0x8000+256*8*m,buffer,256U*8U);
if(rd != 256U*8U) {
FT_errorHandler(4, file_name);
return (0);
}
}
if( fcb_close( &file ) != FCB_SUCCESS ) {
FT_errorHandler(2, file_name);
return (0);