int get_cursor(){
out_b(REG_SCREEN_CTRL, 14); // cursor offset high byte
int offset = in_b(REG_SCREEN_DATA) << 8; //set offset high byte
out_b(REG_SCREEN_CTRL, 15); // cursor offset low byte
offset += in_b(REG_SCREEN_DATA); //set offset low byte
return offset * 2;
}
void disable_8259_irq (int irq)
{
if (irq > -1 && irq < 8)
{
__asm__ ("pushf");
out_b (MASTER_CTLMASK, (in_b (MASTER_CTLMASK) | (1 << irq)));
__asm__ ("popf");
} else if (irq > 7 && irq < 16)
{
__asm__ ("pushf");
out_b (SLAVE_CTLMASK, (in_b (SLAVE_CTLMASK) | (1 << (irq - 8))));
__asm__ ("popf");
}
}
//TODO
char handleKBD(int currLinePosition){
/*return char if key pressed, 0 if no key press*/
char flag;
char mychar = 0;
/*read keyboard status*/
flag = in_b(0x64);
/*if there is data to read, read data*/
if (flag & 0x1){
mychar = getChar();
//if at line cap, don't write
if((mychar != '\b' && mychar != '\n') && currLinePosition == 99){
mychar = 0;
}
if (mychar != 0){ //mychar returns 0 on keyup, deal with this differently, current is crutch
if (!(mychar == '\b' && currLinePosition == 0)){ //DON'T BACKSPACE OVER PROMPT
//print char to screen
print_char(mychar, -1, -1, WHIT_BLK);
}
else {
mychar = 0;
}
}
}
return mychar;
}
ACPI_STATUS
AcpiOsReadPort (
ACPI_IO_ADDRESS Address,
UINT32 *Value,
UINT32 Width)
{
switch (Width) {
case 8:
*Value = in_b((uint16_t)Address);
break;
case 16:
*Value = in_h((uint16_t)Address);
break;
case 32:
*Value = in_w((uint16_t)Address);
break;
default:
return (AE_BAD_PARAMETER);
}
return (AE_OK);
}
/*
* Memory block inputs (8 bit) cnt : number of bytes
*/
EXPORT void InMemB(UW iob, W ix, UB *buf, W cnt)
{
UW port = iob + (ix * IOSTEP);
while (--cnt >= 0) {
*buf++ = in_b(port);
}
}
void main()
{
while(1)
{
if(in_b(4)==0)
{
toggle_d(7);
sleep(200);
}
}
}
/*
I/O read
*/
EXPORT W readIO(UW addr, UW *data, W unit)
{
W n;
UW pa;
/* address misalignment is reported as error */
if (addr & (unit - 1)) return 0;
/* I/O address check & conversion to physical address */
n = chkIOAddr(addr, &pa, unit);
if (n < unit) return 0;
switch(unit) {
case 4: *data = in_w(pa); break;
case 2: *data = in_h(pa); break;
default: *data = in_b(pa);
}
return unit;
}
/*
==================================================================================
Funtion :recvCounter2
Input :void
Output :void
Return :uint8_t
< received a value of counter 2 >
Description :receive a value of counter 2 from a pit
==================================================================================
*/
LOCAL INLINE uint8_t recvCounter2(void)
{
return(in_b(PIT_REG_COUNTER2));
}
/*
==================================================================================
Funtion :recvData
Input :void
Output :void
Return :uint8_t
< received data >
Description :receive a data from a pit
==================================================================================
*/
LOCAL INLINE uint8_t recvData(void)
{
return(in_b(PIT_REG_CONTROL));
}
/*
==================================================================================
Funtion :recvDataSlave
Input :void
Output :void
Return :uint8_t
< received data >
Description :receive data from a pic slave
==================================================================================
*/
LOCAL INLINE uint8_t recvDataSlave(void)
{
return(in_b(PIC_SLV_DAT_REG));
}
/*
==================================================================================
Funtion :recvIrqMaskSlave
Input :void
Output :void
Return :uint8_t
< received data >
Description :receive mask data from a pic slave
==================================================================================
*/
LOCAL INLINE uint8_t recvIrqMaskSlave(void)
{
return(in_b(PIC_SLV_IMR_REG));
}
/*
==================================================================================
Funtion :recvStatusSlave
Input :void
Output :void
Return :uint8_t
< received status >
Description :receive a status from a pic slave
==================================================================================
*/
LOCAL INLINE uint8_t recvStatusSlave(void)
{
return(in_b(PIC_SLV_STS_REG));
}
/*
==================================================================================
Funtion :recvDataMaster
Input :void
Output :void
Return :uint8_t
< received data >
Description :receive data from a pic master
==================================================================================
*/
LOCAL INLINE uint8_t recvDataMaster(void)
{
return(in_b(PIC_MST_DAT_REG));
}
/*
==================================================================================
Funtion :recvIrqMaskMaster
Input :void
Output :void
Return :uint8_t
< received data >
Description :receive mask data from a pic master
==================================================================================
*/
LOCAL INLINE uint8_t recvIrqMaskMaster(void)
{
return(in_b(PIC_MST_IMR_REG));
}
/*
==================================================================================
Funtion :recvStatusMaster
Input :void
Output :void
Return :uint8_t
< received status >
Description :receive a status from a pic master
==================================================================================
*/
LOCAL INLINE uint8_t recvStatusMaster(void)
{
return(in_b(PIC_MST_STS_REG));
}
int getScancode(){
int result;
result = in_b(REGISTER_KEYBOARD_DATA);
return result;
}