frater/bios-OS
Watch
1
0
Fork
You've already forked bios-OS
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

testing

Browse source
This commit is contained in:
Frater 2026-01-19 09:50:33 +01:00
commit 9cb9033a25
6 changed files with 220 additions and 358 deletions
Download patch file Download diff file Expand all files Collapse all files

24
src/bda.asm
View file

@ -75,15 +75,35 @@
; -----------------------------------------------------------------------------------
; controleur clavier/souris i8042 (AT-PS/2)
%define PS2_PORT_BUFFER 0x60
%define PS2_PORT_CTRL 0x64
%define i8042_PS2_DATA 0x60
%define i8042_PS2_CTRL 0x64
; PIC 8259 ports (Programmable Interrupt Controller)
; PIC 1 : Master
%define i8259_MASTER_CMD 0x20
%define i8259_MASTER_DATA 0x21
; PIC 2 : Slave
%define i8259_SLAVE_CMD 0xA0
%define i8259_SLAVE_DATA 0xA1
; i8259 Commands
%define ICW1_ICW4 0x01 ; Indicates that ICW4 will be present
%define ICW1_SINGLE 0x02 ; Single (cascade) mode
%define ICW1_INTERVAL4 0x04 ; Call address interval 4 (8)
%define ICW1_LEVEL 0x08 ; Level triggered (edge) mode
%define ICW1_INIT 0x10 ; Initialization - required!
%define ICW4_8086 0x01 ; 8086/88 (MCS-80/85) mode
%define ICW4_AUTO 0x02 ; Auto (normal) EOI
%define ICW4_BUF_SLAVE 0x08 ; Buffered mode/slave
%define ICW4_BUF_MASTER 0x0C ; Buffered mode/master
%define ICW4_SFNM 0x10 ; Special fully nested (not)
%define PIC_EOI 0x20
; Remap : IRQ0..7 -> 0x08..0x0F, IRQ8..15 -> 0x70..0x77
%define i8259_MASTER_INT 0x08
%define i8259_SLAVE_INT 0x70
; -----------------------------------------------------------------------------------
; bda_setup
; Initialise la BDA à zéro