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#include "VGATextOutput.class.h"
#include <DeviceManager/Disp.ns.h>
#include <TaskManager/V86/V86.ns.h>
//Virtual address in higher half
#define RAM_ADDR 0xC00B8000
using namespace Sys; //For outb
using namespace Disp;
String VGATextOutput::getClass() {
return "display.text";
}
String VGATextOutput::getName() {
return "Standard VGA text display";
}
void VGATextOutput::getModes(Vector<mode_t> &to) {
mode_t m;
m.textCols = 40;
m.textRows = 25;
m.identifier = 1;
m.graphWidth = 0;
m.graphHeight = 0;
m.device = this;
to.push(m);
m.textCols = 80;
m.identifier = 3; //3 = text 80x25 16color, just what we want
to.push(m);
}
bool VGATextOutput::setMode(mode_t& mode) {
if (mode.device == this && (mode.identifier == 3 or mode.identifier == 1)) {
v86_regs_t r;
r.ax = mode.identifier;
m_cols = mode.textCols;
V86::biosInt(0x10, r);
clear();
return true;
}
return false;
}
void VGATextOutput::putChar(u16int line, u16int col, WChar c, u8int color) {
u16int* where = (u16int*)RAM_ADDR;
where[(m_cols * line) + col] = (color << 8) | c.toAscii();
}
void VGATextOutput::moveCursor(u16int line, u16int col) {
u16int csrLoc = (line * m_cols) + col;
outb(0x3D4, 14);
outb(0x3D5, csrLoc >> 8);
outb(0x3D4, 15);
outb(0x3D5, csrLoc & 0xFF);
}
void VGATextOutput::clear() {
u16int* where = (u16int*)RAM_ADDR;
for (int i = 0; i < 25 * 80; i++) where[i] = 0;
}
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