Nothing architecturally limits powerpc to high memory.

Individual operating systems may, but none that I've encountered.

We may revisit this if we change SVM1 to always work in high memory.

diff --git a/src/microcode/confshared.h b/src/microcode/confshared.h
index f3afe2c97c0d12cef947ff16b94663f3a975c8fe..af4747375170d0ccac0bccad01748b5532262467 100644 (file)
--- a/src/microcode/confshared.h
+++ b/src/microcode/confshared.h
@@ -580,6 +580,7 @@ extern void win32_stack_reset (void);
 #  define MACHINE_TYPE         "PowerPC-32"
 #  define CURRENT_FASL_ARCH    FASL_PPC32
 #  define FLOATING_ALIGNMENT   0x7
+#  define HEAP_IN_LOW_MEMORY
 #endif
 
 #ifdef __ppc64__