| 5,19 → 5,14 |
|---|
| ;; IRQ0 HANDLER (TIMER INTERRUPT) ;; |
| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| |
| |
| |
| align 32 |
| irq0: |
| cmp [error_interrupt],-1 |
| je no_error_in_previous_process |
| pushad |
| push ds es |
| mov ax, os_data |
| mov ds, ax |
| mov es, ax |
| |
| mov [0xffff],byte 0 |
| |
| mov [error_interrupt],-1 |
| |
| no_error_in_previous_process: |
| |
| mov edi,[0x3000] |
| shl edi, 3 |
| ; fields of TSS descriptor: |
| 26,10 → 21,6 |
|---|
| inc dword [timer_ticks] |
| |
| mov eax, [timer_ticks] |
| ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
| call playNote ; <<<--- INSERT THIS LINE !!!!!!!!!! |
| ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
| |
| cmp eax,[next_usage_update] |
| jb .nocounter |
| add eax,100 |
| 37,6 → 28,8 |
|---|
| call updatecputimes |
| .nocounter: |
| |
| call playNote ; <<<--- Speaker driver |
| |
| mov edi, [0x3010] |
| |
| mov ebx, [edi+0x18] ; time stamp counter add |
| 47,8 → 40,8 |
|---|
| |
| mov ebx,[0x3000] |
| |
| cmp [0xffff], byte 1 ;1 |
| je do_not_change_task ;je |
| cmp [0xffff], byte 1 |
| je .do_not_change_task |
| |
| .waiting_for_termination: |
| .waiting_for_reuse: |
| 64,43 → 57,55 |
|---|
| je .waiting_for_reuse |
| |
| cmp ebx,[0x3004] |
| jbe nsched0 |
| jbe @f |
| mov ebx,1 |
| mov edi,0x3020 |
| @@: |
| |
| nsched0: |
| |
| mov [0x3000],ebx |
| mov [0x3010],edi |
| |
| do_not_change_task: |
| jmp @f |
| .do_not_change_task: |
| mov [noct], 1 |
| @@: |
| |
| call _rdtsc |
| mov [edi+0x18],eax |
| |
| cmp [0xffff],byte 0 |
| je nodecffff |
| je @f |
| dec byte [0xffff] |
| nodecffff: |
| @@: |
| |
| |
| shl ebx, 3 |
| xor eax, eax |
| add ebx, tss0 |
| mov word [0xB004], bx ; selector ;mov [tss_s],bx |
| mov word [0xB004], bx ; selector |
| mov dword [0xB000], eax ; offset |
| |
| mov al,0x20 ; send End Of Interrupt signal |
| mov dx,0x20 |
| out dx,al |
| |
| cmp [noct], 1 |
| je @f |
| .switch: |
| jmp pword [0xB000] |
| inc [context_counter] ;noname & halyavin |
| @@: |
| mov [noct], 0 |
| |
| jmp irq0 |
| pop es ds |
| popad |
| iret |
| |
| iglobal |
| |
| |
| uglobal |
| context_counter dd 0 ;noname & halyavin |
| noct db 0 |
| endg |
| |
| |