diff --git a/dsim.c b/dsim.c
index 1876279..0c617b1 100644
--- a/dsim.c
+++ b/dsim.c
@@ -14,6 +14,8 @@
 uint16_t ram[0x10000];
 uint16_t ra, rb, rc, rx, ry, rz, ri, rj;
 uint16_t rpc, rsp, rex, ria;
+uint16_t lit; /* temporary storage for literal operands */
+
 bool skip_next;
 uint64_t ticks;
 bool running;
@@ -109,13 +111,6 @@ struct dev_entry iodevs[] = {
     { 0x6d53647c, 0x62e037d3, 0x00000000, debug_irqh, NULL, NULL, NULL },     /* Debug device */
 };
 
-uint16_t lit[] = {
-    0xffff, 0, 1, 2, 3, 4, 5, 6,
-    7, 8, 9, 10, 11, 12, 13, 14,
-    15, 16, 17, 18, 19, 20, 21, 22,
-    23, 24, 25, 26, 27, 28, 29, 30
-};
-
 uint16_t *val(int operand, bool is_a)
 {
     switch (operand) {
@@ -195,7 +190,8 @@ uint16_t *val(int operand, bool is_a)
         ticks++;
         return &ram[rpc++]; /* FIXME: write to literal */
     default:
-        return &lit[operand-0x20];
+        lit = operand - 0x21;
+        return &lit;
     }
 }