#include "compiler.h"
#include "scrnmng.h"
#include "pccore.h"
#include "iocore.h"
#include "vram.h"
#include "scrndraw.h"
#include "palettes.h"
#include "makescrn.h"
#include "makesub.h"
MAKESCRN makescrn;
BYTE scrnallflash;
BYTE blinktest = 0;
extern BYTE dispmode;
static BYTE lastdisp = 0;
BYTE dispflg;
BYTE *dispp = &GRP_RAM[GRAM_BANK0];
BYTE *dispp2 = &GRP_RAM[GRAM_BANK1];
static BYTE blinktime = 1;
DWORD drawtime = 0;
static void fillupdatetmp(void) {
UINT32 *p;
UINT i;
p = (UINT32 *)updatetmp;
for (i=0; i<0x200; i++) {
p[i] |= (UPDATE_TVRAM << 24) | (UPDATE_TVRAM << 16) |
(UPDATE_TVRAM << 8) | UPDATE_TVRAM;
}
}
#if 1
static void flashupdatetmp(void) {
UINT posl;
UINT y;
UINT x;
UINT r;
UINT posr;
BRESULT y2;
REG16 atr;
REG16 udtbase;
REG16 udt;
posl = crtc.s.TXT_TOP;
y = crtc.s.TXT_YL;
do {
for (x=0; x<crtc.s.TXT_XL; x++) {
if (!(tram[TRAM_ATR + LOW11(posl + x)] & X1ATR_Yx2)) {
break;
}
}
y2 = (x < crtc.s.TXT_XL)?FALSE:TRUE;
udtbase = (x < crtc.s.TXT_XL)?0x0000:0x0404;
r = (crtc.s.TXT_XL + 1) >> 1;
do {
posr = LOW11(posl + 1);
atr = (tram[TRAM_ATR + posl] << 8) | tram[TRAM_ATR + posr];
udt = udtbase;
if (!y2) {
if (atr & (X1ATR_Yx2 << 8)) {
udt |= (UPDATE_TRAM | 1) << 8; // 左潰れ縦倍角
}
else {
y2 = TRUE;
}
}
if (!y2) {
if (atr & (X1ATR_Yx2 << 0)) {
udt |= (UPDATE_TRAM | 1) << 0; // 右潰れ縦倍角
}
else {
y2 = TRUE;
}
}
if (atr & (X1ATR_Xx2 << 8)) { // 左側倍角?
udt |= 0x0812;
}
if (atr & (X1ATR_Xx2 << 0)) { // 右側倍角?
udt |= 0x0008;
}
if ((updatetmp[posl] ^ (udt >> 8)) & 0x1f) {
updatetmp[posl] = (UINT8)((udt >> 8) | UPDATE_TVRAM);
}
if ((updatetmp[posr] ^ (udt >> 0)) & 0x1f) {
updatetmp[posr] = (UINT8)((udt >> 0) | UPDATE_TVRAM);
}
posl = LOW11(posl + 2);
} while(--r);
if (crtc.s.TXT_XL & 1) {
posl = LOW11(posl - 1);
}
} while(--y);
}
#else
static LABEL void flashupdatetmp(void) {
__asm {
push ebx
push esi
push edi
movzx esi, crtc.s.TXT_TOP
xor dl, dl
// まず行すべてが縦倍角か調べる
check_tateflag: mov edi, esi
movzx ecx, crtc.s.TXT_XL
tateflaglp_s: and edi, (TRAM_MAX - 1)
test tram[TRAM_ATR + edi], X1ATR_Yx2
je tatex1
inc edi
loop tateflaglp_s
// すべて縦倍角 だったら
movzx ecx, crtc.s.TXT_XL
shr cl, 1
tatex2loop_s: and esi, (TRAM_MAX - 1)
mov ax, (UPDATE_TVRAM or 04h) * 0101h // 縦倍角
mov bx, word ptr (tram[TRAM_ATR + esi])
test bl, X1ATR_Xx2
je tatex2_norleft
// 倍角フラグが立ってる
or ax, 08h + 12h * 256 // 左４倍角 + 右縦倍角は確定
test bh, X1ATR_Xx2
je tatex2_pcg
or ah, 8 // 右側も倍角ビットが立ってた
jmp tatex2_pcg
tatex2_norleft: test bh, X1ATR_Xx2 // ４倍角でない場合
je tatex2_pcg
or ah, 8 // 右側のみ倍角だった
tatex2_pcg: mov bx, word ptr (updatetmp[esi])
and bx, UPDATE_TVRAM * 0101h
or ax, bx // UPDATEフラグを加える
cmp word ptr (updatetmp[esi]), ax
je tatex2noupdate
or ax, UPDATE_TVRAM * 0101h
mov word ptr (updatetmp[esi]), ax
tatex2noupdate: add esi, 2
loop tatex2loop_s
jmp nextlinecheck
tatex1: movzx ecx, crtc.s.TXT_XL
shr cl, 1
xor dh, dh
tatex1loop_s: and esi, (TRAM_MAX - 1)
xor ax, ax
mov bx, word ptr (tram[TRAM_ATR + esi])
or dh, dh // 縦ノーマルは既にあったか？
jne tatex1_tate_e
test bl, X1ATR_Yx2
je tatex1_tate0
mov al, UPDATE_TVRAM or 1 // 左潰れ縦倍角
test bh, X1ATR_Yx2
je tatex1_tate0
mov ah, UPDATE_TVRAM or 1 // 右潰れ縦倍角
jmp tatex1_tate_e
tatex1_tate0: inc dh // 縦ノーマルの出現
tatex1_tate_e:
test bl, X1ATR_Xx2
je tatex1_norleft
// 倍角フラグが立ってる
or ax, 08h + (12h * 256) // 左横倍角 は確定
test bh, X1ATR_Xx2
je tatex1_pcg
or ah, 8 // 右側も倍角ビットが立ってた
jmp tatex1_pcg
tatex1_norleft: test bh, X1ATR_Xx2 // 倍角でない場合
je tatex1_pcg
or ah, 8 // 右側のみ倍角だった
tatex1_pcg: mov bx, word ptr (updatetmp[esi])
and bx, UPDATE_TVRAM * 0101h
or ax, bx
cmp word ptr (updatetmp[esi]), ax
je tatex1noupdate
or ax, UPDATE_TVRAM * 0101h
mov word ptr (updatetmp[esi]), ax
tatex1noupdate: add esi, 2
loop tatex1loop_s
nextlinecheck: inc dl
cmp dl, crtc.s.TXT_YL
jb check_tateflag
pop edi
pop esi
pop ebx
ret
}
}
#endif
static BRESULT updateblink(void) {
UINT pos;
REG8 update;
UINT r;
if (blinktime) {
blinktime--;
return(FALSE);
}
else {
blinktime = 30 - 1;
pos = makescrn.vramtop;
blinktest ^= 0x10;
update = 0;
r = makescrn.vramsize;
while(r) {
r--;
if (tram[TRAM_ATR + pos] & 0x10) {
updatetmp[pos] |= UPDATE_TRAM;
update = UPDATE_TRAM;
}
pos = LOW11(pos + 1);
}
if (update) {
makescrn.existblink = 1;
return(TRUE);
}
else {
return(FALSE);
}
}
}
// ----
static void changemodes(void) {
lastdisp = dispmode;
if (!(dispmode & SCRN_BANK1)) {
dispp = GRP_RAM + GRAM_BANK0;
dispp2 = GRP_RAM + GRAM_BANK1;
dispflg = UPDATE_TRAM | UPDATE_VRAM0;
}
else {
dispp = GRP_RAM + GRAM_BANK1;
dispp2 = GRP_RAM + GRAM_BANK0;
dispflg = UPDATE_TRAM | UPDATE_VRAM1;
}
scrnallflash = 1;
makescrn.palandply = 1;
}
static void changecrtc(void) {
REG8 widthmode;
UINT fontcy;
UINT underlines;
REG8 y2;
UINT charcy;
UINT surfcy;
makescrn.vramtop = LOW11(crtc.s.TXT_TOP);
if (crtc.s.TXT_XL <= 40) {
if (dispmode & SCRN_DRAW4096) {
widthmode = SCRNWIDTHMODE_4096;
}
else {
widthmode = SCRNWIDTHMODE_WIDTH40;
}
}
else {
widthmode = SCRNWIDTHMODE_WIDTH80;
}
scrndraw_changewidth(widthmode);
makescrn.surfcx = min(80, crtc.s.TXT_XL);
makescrn.surfrx = crtc.s.TXT_XL - makescrn.surfcx;
fontcy = crtc.s.FNT_YL;
if (crtc.s.SCRN_BITS & SCRN_24KHZ) {
fontcy >>= 1;
}
underlines = (crtc.s.SCRN_BITS & SCRN_UNDERLINE)?2:0;
if (fontcy > underlines) {
fontcy -= underlines;
}
else {
fontcy = 0;
}
y2 = (crtc.s.SCRN_BITS & SCRN_TEXTYx2)?1:0;
fontcy >>= y2;
#if 0
if (((dispmode & SCRN64_MASK) != SCRN64_INVALID) && (fontcy > 8)) {
fontcy = 8;
}
#endif
if (!fontcy) {
fontcy = 1;
}
if (fontcy > 8) {
fontcy = 8;
}
charcy = fontcy + underlines;
makescrn.fontcy = fontcy;
makescrn.charcy = charcy;
charcy <<= y2;
surfcy = 200 / charcy;
if (surfcy > crtc.s.TXT_YL) {
surfcy = crtc.s.TXT_YL;
}
makescrn.surfcy = surfcy;
makescrn.surfstep = (SURFACE_WIDTH * charcy * 2) - (makescrn.surfcx * 8);
makescrn.vramsize = min(0x800, surfcy * crtc.s.TXT_XL);
scrnmng_setheight(0, charcy * surfcy * 2);
}
// -------------------------------------------------------------------------
typedef void (*DRAWFN)(void);
static const DRAWFN screendraw[8] = {
width80x25_200l, width80x25_400h,
width80x25_200l, width80x25_200h,
width80x12_200l, width80x12_400h,
width80x12_200l, width80x12_200h};
static const DRAWFN screendraw2[8] = {
width80x20l, width80x20h,
width80x20l, width80x20h,
width80x10l, width80x10h,
width80x10l, width80x10h};
void scrnupdate(void) {
BRESULT ddrawflash;
if (!corestat.drawframe) {
return;
}
corestat.drawframe = 0;
ddrawflash = FALSE;
if (lastdisp != dispmode) {
changemodes();
}
if (scrnallflash) {
scrnallflash = 0;
fillupdatetmp();
changecrtc();
makescrn.scrnflash = 1;
}
if (makescrn.remakeattr) {
makescrn.remakeattr = 0;
flashupdatetmp();
}
if (makescrn.palandply) {
makescrn.palandply = 0;
pal_update();
ddrawflash = 1;
}
if (makescrn.existblink) {
makescrn.scrnflash |= updateblink();
}
if (makescrn.scrnflash) {
makescrn.scrnflash = 0;
makescrn.fontycnt = 0;
switch(lastdisp & SCRN64_MASK) {
case SCRN64_320x200:
// width40x25_64s();
break;
case SCRN64_L320x200x2:
// width40x25_64x2();
break;
case SCRN64_L640x200:
// width80x25_64s();
break;
case SCRN64_H320x400:
// width40x25_64h();
break;
case SCRN64_320x200x4096:
// width40x25_4096();
break;
case SCRN64_320x100:
// width40x12_64l();
break;
case SCRN64_320x100x2:
// width40x12_64x2();
break;
case SCRN64_L640x100:
// width80x12_64s();
break;
case SCRN64_H320x200:
// width40x12_64h();
break;
case SCRN64_320x100x4096:
// width40x12_4096();
break;
// case SCRN64_INVALID:
default:
if (!(crtc.s.SCRN_BITS & SCRN_UNDERLINE)) {
screendraw[crtc.s.SCRN_BITS & 7]();
}
else {
screendraw2[crtc.s.SCRN_BITS & 7]();
}
break;
}
ddrawflash = 1;
}
if (ddrawflash) {
ddrawflash = 0;
scrndraw_draw(FALSE);
drawtime++;
}
}
void makescrn_initialize(void) {
makesub_initialize();
}
void makescrn_reset(void) {
fillupdatetmp();
changemodes();
changecrtc();
}
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