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diff --git a/openpower/sv/shape_table_format.mdwn b/openpower/sv/shape_table_format.mdwn
index 6e54cacffd52d527af55087b986426b4a866bb07..dfa3ed970c783aa3185767f80bb7320bd0093450 100644 (file)
--- a/openpower/sv/shape_table_format.mdwn
+++ b/openpower/sv/shape_table_format.mdwn
@@ -120,7 +120,8 @@ Matrix-style reordering still applies to the indices, except limited
 to up to 2 Dimensions (X,Y). Ordering is therefore limited to (X,Y) or
 (Y,X). Only one dimension may optionally be skipped. Inversion of either
 X or Y or both is possible. Pseudocode for Indexed Mode (without elwidth
-overrides) may be written in terms of Matrix Mode:
+overrides) may be written in terms of Matrix Mode, specifically
+purposed to ensure that the 3rd dimension (Z) has no effect:
 
 ```
 def index_remap(ISHAPE, i):
@@ -128,7 +129,7 @@ def index_remap(ISHAPE, i):
     MSHAPE.invxyz = 0b0 || ISHAPE.invxy
     MSHAPE.xdimsz = ISHAPE.xdimsz
     MSHAPE.ydimsz = ISHAPE.ydimsz
-    MSHAPE.zdimsz = 0
+    MSHAPE.zdimsz = MAXVL-1
     if ISHAPE.permute = 0b110 # 0,1
        MSHAPE.permute = 0b000 # 0,1,2
     if ISHAPE.permute = 0b111 # 1,0