Add comment about reset value of stack pointer

diff --git a/src/cpu8051.c b/src/cpu8051.c
index a44cd7f..213f61b 100644 (file)
--- a/src/cpu8051.c
+++ b/src/cpu8051.c
@@ -118,6 +118,8 @@ cpu8051_Reset(void)
        memory_sfr_write8(_P1_, 0xFF);
        memory_sfr_write8(_P2_, 0xFF);
        memory_sfr_write8(_P3_, 0xFF);
+
+       /* The default value of SP (after system reset) is 07 */
        memory_sfr_write8(_SP_, 0x07);
 }