everything is finally at peace

10 files changed, 215 insertions, 120 deletions

diff --git a/ROMs/hello_world.asm b/ROMs/_old/hello_world.asm
index 1d812fb..1d812fb 100644
--- a/ROMs/hello_world.asm
+++ b/ROMs/_old/hello_world.asm
diff --git a/ROMs/hello_world.q1 b/ROMs/_old/hello_world.q1
index fd66ffe..fd66ffe 100644
--- a/ROMs/hello_world.q1
+++ b/ROMs/_old/hello_world.q1
diff --git a/ROMs/manual.q1 b/ROMs/_old/manual.q1
index b166c7a..b166c7a 100644
--- a/ROMs/manual.q1
+++ b/ROMs/_old/manual.q1
diff --git a/ROMs/write_display_direct.asm b/ROMs/_old/write_display_direct.asm
index 9fde417..9fde417 100644
--- a/ROMs/write_display_direct.asm
+++ b/ROMs/_old/write_display_direct.asm
diff --git a/ROMs/write_display_direct.q1 b/ROMs/_old/write_display_direct.q1
index 4041649..4041649 100644
--- a/ROMs/write_display_direct.q1
+++ b/ROMs/_old/write_display_direct.q1
diff --git a/ROMs/hid.asm b/ROMs/hid.asm
deleted file mode 100644
index 0e3600f..0000000
--- a/ROMs/hid.asm
+++ /dev/null
@@ -1,117 +0,0 @@
-    jmp _main
-_setPixel_int_x__int_y__int_c:
-    pop V0
-    pop [$71FF]
-    pop [$7201]
-    pop [$7203]
-    push V0
-    mov $402F, [$7205]
-    push [$7201]
-    mov 128, V1
-    pop V0
-    mul V0, V1
-    push AX
-    mov [$71FF], V1
-    pop V0
-    add V0, V1
-    mov AX, [$7207]
-    push [$7205]
-    mov [$7207], V1
-    pop V0
-    mul V1, 1
-    add AX, V0
-    mov AX, V0
-    movb [$7203], [V0]
-    mov 0, V0
-    ret
-
-_setPixelIndex_int_i__int_c:
-    pop V0
-    pop [$7209]
-    pop [$720B]
-    push V0
-    mov $402F, [$720D]
-    push [$720D]
-    mov [$7209], V1
-    pop V0
-    mul V1, 1
-    add AX, V0
-    mov AX, V0
-    movb [$720B], [V0]
-    mov 0, V0
-    ret
-
-_clear_int_c:
-    pop V0
-    pop [$720F]
-    push V0
-    mov $402F, [$7211]
-    push 64
-    mov 128, V1
-    pop V0
-    mul V0, V1
-    mov AX, [$7213]
-    mov 0, [$7215]
-_body_1:
-    push [$7215]
-    mov [$7213], V1
-    pop V0
-    lt V0, V1
-    not LX
-    bz
-    jmp _end_2
-    push [$7211]
-    mov [$7215], V1
-    pop V0
-    mul V1, 1
-    add AX, V0
-    mov AX, V0
-    movb [$720F], [V0]
-    push [$7215]
-    inc [$7215]
-    pop V0
-    jmp _body_1
-_end_2:
-    mov 0, V0
-    ret
-
-_main:
-_body_3:
-    not 1
-    bz
-    jmp _end_4
-    mov $602F, [$7217]
-    push [$7217]
-    mov 0, V1
-    pop V0
-    mul V1, 2
-    add AX, V0
-    mov AX, V0
-    mov [V0], [$7219]
-    push [$7217]
-    mov 1, V1
-    pop V0
-    mul V1, 2
-    add AX, V0
-    mov AX, V0
-    mov [V0], [$721B]
-    push [$721B]
-    push 1
-    mov 1, V1
-    pop V0
-    cmp V0, V1
-    mov LX, V1
-    pop V0
-    and V0, V1
-    not DX
-    bz
-    jmp _end_5
-    push 1
-    push [$7219]
-    call _setPixelIndex_int_i__int_c
-_end_5:
-    jmp _body_3
-_end_4:
-    mov 0, V0
-    ret
-
diff --git a/ROMs/hid.q1 b/ROMs/hid.q1
deleted file mode 100644
index e188e33..0000000
--- a/ROMs/hid.q1
+++ /dev/null
diff --git a/ROMs/paint.asm b/ROMs/paint.asm
new file mode 100644
index 0000000..2f023b7
--- /dev/null
+++ b/ROMs/paint.asm
@@ -0,0 +1,191 @@
+    jmp _main
+_setPixel_int_x__int_y__int_c:; int setPixel(int x, int y, int c)
+    pop V0                    ; preserve function return address
+    pop [$71FF]               ; param int x
+    pop [$7201]               ; param int y
+    pop [$7203]               ; param int c
+    push V0                   ; restore function return address
+    mov $402F, [$7205]        ; int screenStart = $402F
+    push [$7201]              ; left operand
+    mov 128, V1               ; right operand
+    pop V0                    ; get left operand back
+    mul V0, V1                ; compute multiplication
+    push AX                   ; left operand
+    mov [$71FF], V1           ; right operand
+    pop V0                    ; get left operand back
+    add V0, V1                ; compute addition
+    mov AX, [$7207]           ; int i = AX
+    push [$7205]              ; store index obj
+    mov [$7207], V1           ; store indexer
+    pop V0                    ; restore index obj
+    mul V1, 1                 ; multiply indexer by 1
+    add AX, V0                ; add indexer and index obj
+    mov AX, V0                ; move to general purpose register
+    movb [$7203], [V0]        ; [V0] = [$7203]
+    mov 0, V0                 ; fallback return 0
+    ret
+
+_setPixelIndex_int_i__int_c:  ; int setPixelIndex(int i, int c)
+    pop V0                    ; preserve function return address
+    pop [$7209]               ; param int i
+    pop [$720B]               ; param int c
+    push V0                   ; restore function return address
+    mov $402F, [$720D]        ; int screenStart = $402F
+    push [$720D]              ; store index obj
+    mov [$7209], V1           ; store indexer
+    pop V0                    ; restore index obj
+    mul V1, 1                 ; multiply indexer by 1
+    add AX, V0                ; add indexer and index obj
+    mov AX, V0                ; move to general purpose register
+    movb [$720B], [V0]        ; [V0] = [$720B]
+    mov 0, V0                 ; fallback return 0
+    ret
+
+_clear_int_c:                 ; int clear(int c)
+    pop V0                    ; preserve function return address
+    pop [$720F]               ; param int c
+    push V0                   ; restore function return address
+    mov $402F, [$7211]        ; int screenStart = $402F
+    push 64                   ; left operand
+    mov 128, V1               ; right operand
+    pop V0                    ; get left operand back
+    mul V0, V1                ; compute multiplication
+    mov AX, [$7213]           ; int screenSize = AX
+    mov 0, [$7215]            ; int i = 0
+_body_1:
+    push [$7215]              ; left operand
+    mov [$7213], V1           ; right operand
+    pop V0                    ; get left operand back
+    lt V0, V1                 ; compute less than check
+    not LX
+    bz
+    jmp _end_2                ; if for condition fails, jump to end
+    push [$7211]              ; store index obj
+    mov [$7215], V1           ; store indexer
+    pop V0                    ; restore index obj
+    mul V1, 1                 ; multiply indexer by 1
+    add AX, V0                ; add indexer and index obj
+    mov AX, V0                ; move to general purpose register
+    movb [$720F], [V0]        ; [V0] = [$720F]
+    push [$7215]              ; i++
+    inc [$7215]
+    pop V0
+    jmp _body_1
+_end_2:
+    mov 0, V0                 ; fallback return 0
+    ret
+
+_getKeyState_int_scanCode:    ; int getKeyState(int scanCode)
+    pop V0                    ; preserve function return address
+    pop [$7217]               ; param int scanCode
+    push V0                   ; restore function return address
+    mov $6033, [$7219]        ; int hid = $6033
+    push [$7217]              ; left operand
+    mov 8, V1                 ; right operand
+    pop V0                    ; get left operand back
+    div V0, V1                ; compute division
+    mov AX, [$721B]           ; int index = AX
+    push [$7217]              ; left operand
+    mov 8, V1                 ; right operand
+    pop V0                    ; get left operand back
+    mod V0, V1                ; compute modulus
+    mov AX, [$721D]           ; int bit = AX
+    push [$7219]              ; store index obj
+    push [$721B]              ; left operand
+    mov 1, V1                 ; right operand
+    pop V0                    ; get left operand back
+    sub V0, V1                ; compute subtraction
+    mov AX, V1                ; store indexer
+    pop V0                    ; restore index obj
+    mul V1, 1                 ; multiply indexer by 1
+    add AX, V0                ; add indexer and index obj
+    mov AX, V0                ; move to general purpose register
+    mov [V0], [$721F]         ; int val = [V0]
+    push [$721F]              ; left operand
+    push 1                    ; left operand
+    mov [$721D], V1           ; right operand
+    pop V0                    ; get left operand back
+    shl V0, V1                ; compute left shift
+    mov DX, V1                ; right operand
+    pop V0                    ; get left operand back
+    and V0, V1                ; compute and
+    push DX                   ; left operand
+    mov 0, V1                 ; right operand
+    pop V0                    ; get left operand back
+    cmp V0, V1                ; compute inequality check
+    not
+    mov LX, V0                ; return value
+    ret
+    mov 0, V0                 ; fallback return 0
+    ret
+
+_main:                        ; int main()
+    mov 0, [$7221]            ; int color = 0
+_body_3:
+    not 1
+    bz
+    jmp _end_4                ; if while condition fails, jump to end
+    mov $602F, [$7223]        ; int hid = $602F
+    push [$7223]              ; store index obj
+    mov 0, V1                 ; store indexer
+    pop V0                    ; restore index obj
+    mul V1, 2                 ; multiply indexer by 2
+    add AX, V0                ; add indexer and index obj
+    mov AX, V0                ; move to general purpose register
+    mov [V0], [$7225]         ; int mouseIndex = [V0]
+    push [$7223]              ; store index obj
+    mov 1, V1                 ; store indexer
+    pop V0                    ; restore index obj
+    mul V1, 2                 ; multiply indexer by 2
+    add AX, V0                ; add indexer and index obj
+    mov AX, V0                ; move to general purpose register
+    mov [V0], [$7227]         ; int mouseState = [V0]
+    push [$7227]              ; left operand
+    mov 1, V1                 ; right operand
+    pop V0                    ; get left operand back
+    and V0, V1                ; compute and
+    not DX
+    bz                        ; check if condition
+    jmp _end_5                ; if succeeds, continue, else jump to end
+    push [$7221]              ; left operand
+    mov 3, V1                 ; right operand
+    pop V0                    ; get left operand back
+    mod V0, V1                ; compute modulus
+    push AX                   ; left operand
+    mov 1, V1                 ; right operand
+    pop V0                    ; get left operand back
+    add V0, V1                ; compute addition
+    push AX                   ; arg int i
+    push [$7225]              ; arg int c
+    call _setPixelIndex_int_i__int_c; int setPixelIndex(int i, int c)
+_end_5:
+    push 67                   ; arg int scanCode
+    call _getKeyState_int_scanCode; int getKeyState(int scanCode)
+    not V0
+    bz                        ; check if condition
+    jmp _end_6                ; if succeeds, continue, else jump to end
+    push 8                    ; arg int c
+    call _clear_int_c         ; int clear(int c)
+_end_6:
+    push 65                   ; arg int scanCode
+    call _getKeyState_int_scanCode; int getKeyState(int scanCode)
+    not V0
+    bz                        ; check if condition
+    jmp _end_7                ; if succeeds, continue, else jump to end
+    push [$7221]              ; i++
+    inc [$7221]
+    pop V0
+_body_8:
+    push 65                   ; arg int scanCode
+    call _getKeyState_int_scanCode; int getKeyState(int scanCode)
+    not V0
+    bz
+    jmp _end_9                ; if while condition fails, jump to end
+    jmp _body_8
+_end_9:
+_end_7:
+    jmp _body_3
+_end_4:
+    mov 0, V0                 ; fallback return 0
+    ret
+
diff --git a/ROMs/hid.c b/ROMs/paint.c
index 615808a..443719a 100644
--- a/ROMs/hid.c
+++ b/ROMs/paint.c
@@ -21,14 +21,35 @@ int clear(int c)
     }
 }
 
-int main() 
+int getKeyState(int scanCode)
 {
+    char* hid = 0x6033;
+    int index = scanCode / 8;
+    int bit   = scanCode % 8;
+
+    int val = hid[index - 1];
+    return (val & (1 << bit)) != 0;
+}
+
+int main()
+{
+	int color = 0;
     while (1)
     {
         int* hid = 0x602F;
         int mouseIndex = hid[0];
         int mouseState = hid[1];
-        if (mouseState & 1 == 1)
-        setPixelIndex(mouseIndex, 1);
+
+        if (mouseState & 1)
+            setPixelIndex(mouseIndex, (color % 3) + 1);
+
+        if (getKeyState(67))
+            clear(8);
+
+ 		if (getKeyState(65))
+		{
+            color++;
+			while (getKeyState(65)) { }
+		}
     }
 }
\ No newline at end of file
diff --git a/ROMs/paint.q1 b/ROMs/paint.q1
new file mode 100644
index 0000000..98929bb
--- /dev/null
+++ b/ROMs/paint.q1