New dev notes

notes/2023-08-10--dev-notes.md

@@ -0,0 +1,22 @@
+# Dev notes — 2023-08-10
+
+- Name it "Cardiograph"
+  - homage to CARDIAC
+  - (and cardboard)
+  - and the special feature is that unlike other paper computers, this one has a graphical display
+
+- art note: "performing computation"
+
+## Keypad (and memory map)
+
+- Copy the CHIP-8 approach: one memory location that stores the current key pressed
+- (Only one key can be pressed at a time)
+- And then do a bitmask-y thing for the secret advanced mode, to add the ability to detecut multiple simultaneous keypresses
+
+## Display (and memory map)
+
+- Move display to $10?
+- Then $00 could contain a jump to the start of code, and we wouldn't have this strange "IP doesn't start at 0" situation
+- But, this might feel more complicated, and it would make working with the display a little less elegant...
+- C64 has random stuff at $0000
+  - How does the C64's PC get initialized ??