Steve morehead

asm/asm.py

@@ -44,6 +44,7 @@
     "NOT":  {"type": 1, "code": "01101001"},
     "OR":   {"type": 2, "code": "10101010"},
     "POP":  {"type": 1, "code": "01000110"},
+    "PRL":  {"type": 1, "code": "01110011"},
     "PRA":  {"type": 1, "code": "01001000"},
     "PRN":  {"type": 1, "code": "01000111"},
     "PUSH": {"type": 1, "code": "01000101"},

asm/histogram.asm

@@ -0,0 +1,26 @@
+; histogram.asm
+;
+; Expected output:
+; *
+; **
+; ****
+; ********
+; ****************
+; ********************************
+; ****************************************************************
+
+LDI R0,1        ; 0 - current asterisks
+LDI R1,1        ; 1 - current line
+LDI R2,8        ; 2 - max lines + 1
+LDI R3,2        ; 3 - multiply by
+LDI R4,Print    ; 4 - load print address
+
+Print:
+
+PRL R0          ; 5 - print line with current asterisks
+MUL R0,R3       ; 6 - double current asterisks
+INC R1          ; 7 - increment current line
+CMP R1,R2       ; 8 - compare lines
+JLT R4          ; 9 - less than max lines loop back to print
+HLT             ; 10 - halt when done
+

asm/mult.asm

@@ -1,6 +1,6 @@
-# mult.asm
-#
-# Expected output: 72
+; mult.asm
+;
+; Expected output: 72
 
 LDI R0,8
 LDI R1,9