delete old program

programs/echo_keyboard.txt

@@ -1,91 +0,0 @@
-
-%define KBD_STATUS 0x1ffc
-%define KBD_CODE 0x1ffe
-%define VCD 0x2000
-
-%define FL_EQ 0x2
-%define FL_EQ 0x4
-
-%define KBD_FLAG_IS_RELEASE 0x1
-
-    mov rsp, 0x1000
-    mov rbp, rsp
-
-    mov r0, 512
-    mov r1, 1
-    dskr r0, r1
-
-    ; setup video character display (VCD)
-    ; descriptor table structure:
-    ;   [addr + 0] memory map base
-    mov r0, VCD
-    mov [0x700], r0
-    lvcd 0x700
-
-    ; setup keyboard (KBD)
-    ; descriptor table structure:
-    ;   [addr + 0] status address
-    ;   [addr + 2] keycode address
-    ;   [addr + 4] keyboard interrupt handler
-    mov r0, KBD_STATUS
-    mov [0x702], r0
-    mov r0, KBD_CODE
-    mov [0x704], r0
-    mov r0, key_press_int
-    mov [0x706], r0
-    lkbd 0x702
-
-    ; character counter
-    mov r0, 0
-    mov [0x600], r0
-
-main_loop:
-    hlt
-    jmp main_loop
-    
-key_press_int:
-    mov r0, [KBD_STATUS]
-    and r0, r0, KBD_FLAG_IS_RELEASE
-    jnz r0, .leave
-
-    mov r0, [0x600]
-    add r0, r0, VCD
-    mov r1, [KBC_CODE]
-    cmp r1, 44 ; spacebar
-    mov r2, rfl
-    and r2, r2, FL_EQ
-    jnz r2, .incr
-    add r1, r1, 61
-    mov byte [r0], r1
-.incr:
-    mov r0, [0x600]
-    add r0, r0, 1
-    mov [0x600], r0
-.leave:
-    reti
-
-scancode_to_char:
-    cmp r1, 61
-
-    mov r2, rfl
-    and r2, r2, FL_LT
-    jnz .not_letter
-
-    ; if r1 > 86 { goto .not_letter }
-    cmp r1, 86
-    mov r2, rfl
-    xor r2, 0xffff
-    and r2, r2, FL_EQ | FL_LT
-
-
-    mov r4, rfl
-    and r4, r4, FL_EQ
-    shr r4, r4, 2
-
-.not_letter:
-
-
-61 >= 61 
-
-; vim: syntax=nasm
-