added preprocessor (wip)

1 files changed, 42 insertions, 0 deletions

diff --git a/ROMs/lib.c b/ROMs/lib.c
new file mode 100644
index 0000000..32378c0
--- /dev/null
+++ b/ROMs/lib.c
@@ -0,0 +1,42 @@
+int setPixel(int x, int y, int c)
+{
+    char* screenStart = 0x402F;
+    int i = (y * 128) + x;
+    screenStart[i] = c;
+}
+
+int setPixel(int i, int c)
+{
+    char* screenStart = 0x402F;
+    screenStart[i] = c;
+}
+
+int clear(int c)
+{
+    char* screenStart = 0x402F;
+    char screenSize = 64 * 128;
+    for (int i = 0; i < screenSize; i++)
+    {
+        screenStart[i] = c;
+    }
+}
+
+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 getMouseIndex()
+{
+    return *(0x602F);
+}
+
+int getMouseState()
+{
+    return *(0x602F + 2);
+}
\ No newline at end of file