diff options
| -rw-r--r-- | mu.md | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/mu.md b/mu.md index a3271631..6892df9d 100644 --- a/mu.md +++ b/mu.md @@ -258,6 +258,7 @@ var/xreg <- min *var2/reg2 var/xreg <- max var2/xreg2 var/xreg <- max var2 var/xreg <- max *var2/reg2 +``` Remember, when these instructions use indirect mode, they still use an integer register. Floating-point registers can't hold addresses. @@ -266,6 +267,7 @@ Most instructions operate exclusively on integer or floating-point operands. The only exceptions are the instructions for converting between integers and floating-point numbers. +``` var/xreg <- convert var2/reg2 var/xreg <- convert var2 var/xreg <- convert *var2/reg2 @@ -273,6 +275,7 @@ var/xreg <- convert *var2/reg2 var/reg <- convert var2/xreg2 var/reg <- convert var2 var/reg <- convert *var2/reg2 +``` There are no instructions accepting floating-point literals. To obtain integer literals in floating-point registers, copy them to general-purpose registers @@ -282,13 +285,16 @@ One pattern you may have noticed above is that the floating-point instructions above always write to registers. The only exceptions are `copy` instructions, which can write to memory locations. +``` var/xreg <- copy var2/xreg2 copy-to var1, var2/xreg var/xreg <- copy var2 var/xreg <- copy *var2/reg2 +``` Floating-point comparisons always put a register on the left-hand side: +``` compare var1/xreg1, var2/xreg2 compare var1/xreg1, var2 ``` |