Memory controller implemented.

2026-08-15 20:43:53 -04:00
parent c4b2c27a2d
commit 04dfcd707b
32 changed files with 1842 additions and 21 deletions
@@ -0,0 +1,25 @@
+; A device refuses, and nothing is installed to deal with it.
+;
+; The machine has to stop where it stands and say which port refused and where. Letting
+; execution carry on would mean the program continues as though the access had worked,
+; which is the failure the fault trap exists to prevent.
+;
+; Correct output is:
+;   O
+;   a fault naming port 17, and a non zero exit.
+
+#Program
+
+start:
+  INIA 0d79         ; 'O', so it is clear how far it got.
+  OUTA 0x00
+  INIA 0x0A
+  OUTA 0x00
+
+  INIA 0d1
+  OUTA 0x11         ; The device refuses, and no handler is installed.
+
+  ; Never reached.
+  INIA 0d88         ; 'X'
+  OUTA 0x00
+  HALT