diff options
| -rw-r--r-- | README.md | 51 | ||||
| -rw-r--r-- | bochsrc | 2 | ||||
| -rw-r--r-- | kernel/kernel.c | 1 |
3 files changed, 53 insertions, 1 deletions
@@ -116,6 +116,57 @@ REFERENCES MY NOTES BELOW THIS LINE ======================== +Keyboard Driver +--------------- + +//some thoughts on redesign of the keyboard driver +//use uint8_t for proc_pos and buff_pos and a BUF_SIZE of 256 for auto wrap!? + +// kb input ringbuffer +#define BUF_SIZE 256 +kb_scancode kb_buff[BUF_SIZE]; + +buff_pos=0; +proc_pos=0; +buffered=0; + +void kb_irq() +{ + cli + + //we get one interrupt for EACH scancode! + kb_scancode val=get_scancode(); + + // think about race condition if called while inside kb_proc(); + if(buffered+1<BUF_SIZE) + { + kb_buff[buff_pos]=val; + buff_pos++; + buffered++; + } + else + { + //kb ring buffer is full; + } + sti + +} + + +void kb_proc() +{ + if(proc_pos!=buff_pos) + { + kb_scancode val=kb_buff[proc_pos]; + + proc_pos++; + buffered--; + + stdin(scancode_to_char(val)); + + } +} + Linux Startup x86 ----------------- ~ ontogeny recapitulates phylogeny ~ @@ -283,7 +283,7 @@ vga: extension=vbe # The optional parameter 'write_protected' can be used to control the media # write protect switch. By default it is turned off. #======================================================================= -floppya: 1_44=/home/miguel/_int/dev/FoolOs/FoolOS.img, status=inserted +floppya: 1_44=./FoolOS.img, status=inserted #floppya: image=../1.44, status=inserted #floppya: 1_44=/dev/fd0H1440, status=inserted #floppya: 1_2=../1_2, status=inserted diff --git a/kernel/kernel.c b/kernel/kernel.c index f4c9653..16028fd 100644 --- a/kernel/kernel.c +++ b/kernel/kernel.c @@ -20,6 +20,7 @@ void int_test_handler() X86_IRQ_BEGIN scr_put_string("inside software interrupt handler 88"); + sleep(30); X86_IRQ_END |