diff --git a/TODO.md b/TODO.md
deleted file mode 100644
index 988b75c..0000000
--- a/TODO.md
+++ /dev/null
@@ -1,11 +0,0 @@
-- more PIA: check out vice
-
-PIA init-sequence
-5021 > 12 7F
-5021 > 11 A7
-5022 > 13 A7
-5023 > 12 5C
-5025 > 12 D
-5026 > 12 0
-
-http://mamedev.org/source/src/mess/machine/apple1.c.html
diff --git a/pia.cpp b/pia.cpp
index 7ce8e7b..53ba09d 100644
--- a/pia.cpp
+++ b/pia.cpp
@@ -145,7 +145,7 @@ void PIA::write_cb2(bool state) {
 }
 
 uint8_t PIA::read_cra() {
-	byte b = cra;
+	uint8_t b = cra;
 
 	if (irq_a1)
 		b |= IRQ1;
@@ -157,7 +157,7 @@ uint8_t PIA::read_cra() {
 }
 
 uint8_t PIA::read_crb() {
-	byte b = crb;
+	uint8_t b = crb;
 
 	if (irq_b1)
 		b |= IRQ1;