Interrupt system implemented, some new programs.

2026-08-15 00:44:13 -04:00
parent 638b68b25c
commit 6d1966d500
79 changed files with 2778 additions and 88 deletions
@@ -0,0 +1,15 @@
+; Tests that the CPU stops when it meets a byte it cannot decode.
+;
+; 0xFE is not an instruction. Placing it in the Program Segment as a literal gets
+; it past the assembler, which is the only way to build a program containing one.
+;
+; The CPU should raise the Fault Flag, halt, and leave the Program Counter pointing
+; at the offending byte rather than stepping over it and carrying on. The emulator
+; then reports what it was and where, and exits non zero.
+
+#Program
+
+start:
+  INIA 0d65     ; Something harmless first, so the fault is not at address zero.
+  0xFE          ; Not an instruction.
+  HALT          ; Never reached.