diff --git a/zdocs/developers/powerpc.md b/zdocs/developers/powerpc.md
index dc6db60..0c1341b 100644
--- a/zdocs/developers/powerpc.md
+++ b/zdocs/developers/powerpc.md
@@ -42,7 +42,8 @@ Up to 128 instruction entries and 128 data entries can be stored at a time.
 
 # Special Registers
 
-| Register Name                     | Register Number      | Purpose                                               | :-------------------------------- | :------------------- | :---------------------------------------------------- |
+| Register Name                     | Register Number      | Purpose                                               |
+| :-------------------------------- | :------------------- | :---------------------------------------------------- |
 | Multiply Quotient Register (MQ)   | 0                    | (601 only)                                            |
 | Integer Exception (XER)           | 1                    |                                                       |
 | RTC Upper Register (RTCU)         | 4                    | (601 only)                                            |
@@ -77,4 +78,6 @@ Up to 128 instruction entries and 128 data entries can be stored at a time.
 
 * As the PowerPC does not have an instruction to load an immediate 32-bit value, it's common to see a lis/ori coding pattern.
 
+* The 603 relies on the instructions tlbld and tlbli to assist in TLB reloading.
+
 * To accomodate for early programs compiled on PowerPC 601 Macs, the classic Mac OS has to emulate the POWER instructions that were removed from later processors.
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