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/* Copyright (C) 1996 Robert de Bath <robert@mayday.compulink.co.uk>
* This file is part of the Linux-8086 C library and is distributed
* under the GNU Library General Public License.
*/
#if !__FIRST_ARG_IN_AX__
#ifdef __AS386_16__
#ifdef __STANDALONE__
#include <bios.h>
#include <errno.h>
int errno;
extern void (*__smart_putch)();
#define CTRL(x) ((x)&0x1F)
static int last_attr = 0x07;
static int con_mode;
static unsigned char con_height = 24, con_width = 79;
static int con_colour = 0;
static unsigned char con_row, con_col;
vt52_putch(c)
int c;
{
static int ctrl = 0;
int new_attr;
__smart_putch = vt52_putch();
if( con_mode==0 ) asm_coninit();
switch( ctrl )
{
case 1:
ctrl=0;
switch(c)
{
case 'A': if( con_row ) con_row--; asm_cpos(con_row, con_col); break;
case 'B': if( con_row != con_height ) con_row++;
asm_cpos(con_row, con_col); break;
case 'C': if( con_col != con_height ) con_col++;
asm_cpos(con_row, con_col); break;
case 'D': if( con_col ) con_col--; asm_cpos(con_row, con_col); break;
case 'E': last_attr = 0x07; asm_cls();
case 'H': asm_cpos(0,0); break;
case 'J': asm_cls(); break;
case 'K': break;
case 'R': ctrl = 2; break; /* Foreground */
case 'S': ctrl = 3; break; /* Background */
case 'Y': ctrl = 4; break; /* ttypos */
}
break;
case 2: ctrl=0; new_attr = (last_attr & 0xF0) + (c&0xF);
if(0) {
case 3: ctrl=0; new_attr = (last_attr & 0x0F) + (c<<4);
}
switch(c)
{
case '_': if( !con_colour ) last_attr = (last_attr&0x88) + 1;
break;
case '!': last_attr = (last_attr&0x88) + 0x70; break;
case ' ': last_attr = 0x07; break;
case '+': last_attr |= 0x08; break;
case '*': last_attr |= 0x80; break;
default: if( con_colour )
last_attr = new_attr;
}
break;
case 4: ctrl=5; con_col = c-' '; break;
case 5: ctrl=0; con_row = c-' '; asm_cpos(con_row, con_col); break;
break;
default:
if( c & 0xE0 )
{ asm_colour(last_attr) ; asm_putc(c); }
else switch(c)
{
default:
asm_putc(c);
break;
case CTRL('I'):
asm_gpos();
con_col = ((con_col+8)& -8);
asm_cpos(con_row, con_col);
break;
case CTRL('L'):
asm_cpos(0,0);
asm_cls();
break;
case CTRL('['):
ctrl = 1;
asm_gpos();
break;
}
break;
}
}
static asm_coninit()
{
#asm
mov ax,#$0F00
int $10
mov _con_mode,ax
#endasm
if( (con_mode &0xFF) > 39 ) con_width = (con_mode>>8);
if( (con_mode&0xFF) != 0x7)
con_colour = 1;
}
static asm_putc(c)
{
#asm
#if !__FIRST_ARG_IN_AX__
mov bx,sp
mov ax,[bx+2]
#endif
cmp al,#$0A
jne not_nl
mov ax,#$0E0D
mov bx,#7
int $10
mov al,#$0A
not_nl:
mov ah,#$0E
mov bx,#7
int $10
#endasm
}
static asm_cls()
{
#asm
push bp ! Bug in some old BIOS`s
!mov ax,#$0500
!int $10
mov ax,#$0600
mov bh,_last_attr
mov cx,#$0000
mov dl,_con_width
mov dh,_con_height
int $10
pop bp
#endasm
}
static asm_cpos(r,c)
{
#asm
#if __FIRST_ARG_IN_AX__
mov bx,sp
mov dh,al
mov ax,[bx+2]
mov dl,al
#else
mov bx,sp
mov ax,[bx+2]
mov dh,al
mov ax,[bx+4]
mov dl,al
#endif
mov ah,#$02
mov bx,#7
int $10
#endasm
}
static asm_colour(c)
{
#asm
#if __FIRST_ARG_IN_AX__
mov bx,ax
#else
mov bx,sp
mov bx,[bx+2]
#endif
mov ah,#$08
int $10
mov ah,#$09
mov cx,#1
int $10
#endasm
}
static asm_gpos()
{
#asm
mov ah,#$03
mov bx,#7
int $10
mov [_con_row],dh
mov [_con_col],dl
mov ax,cx
#endasm
}
#endif
#endif
#endif
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