/* fonts can be up to 16 bits wide */
static void DrawChar(char const Char, unsigned char Op)
{
unsigned int MaskBit = BIT0; //src
unsigned char Rows = GetCurrentFontHeight();
unsigned char CharWidth = GetCharacterWidth(Char);
unsigned int bitmap[MAX_FONT_ROWS];
GetCharacterBitmap(Char, (unsigned int *)&bitmap);
/* do things bit by bit */
unsigned char i;
unsigned char row;
for (i = 0; i < CharWidth && gColumn < BYTES_PER_LINE; i++)
{
for (row = 0; row < Rows; row++)
{
// if ((MaskBit & bitmap[row])) pMyBuffer[gRow+row].Data[gColumn] |= gBitColumnMask;
BitOp(&pMyBuffer[gRow+row].Data[gColumn], gBitColumnMask, MaskBit & bitmap[row], Op);
}
/* the shift direction seems backwards... */
MaskBit <<= 1;
gBitColumnMask <<= 1;
if (gBitColumnMask == 0)
{
gBitColumnMask = BIT0;
gColumn++;
}
}
}
// <math_bits> ::= <math_expression> [<bit_op> <math_expression>]*
void Bits(CPU *cpu, Files file){
Expression(cpu, file);
while(IsBitOp(file)){
cpu->PushValue();
BitOp(cpu, file);
}
}
