add comment and sim build rule master
authorChris Lu <chris@lulabs.net>
Thu, 25 Jun 2020 12:06:57 +0000 (07:06 -0500)
committerChris Lu <chris@lulabs.net>
Thu, 25 Jun 2020 12:06:57 +0000 (07:06 -0500)
Makefile [changed mode: 0644->0755]
mandelsim.c

old mode 100644 (file)
new mode 100755 (executable)
index cd766fa..b7b04ce
--- a/Makefile
+++ b/Makefile
@@ -5,6 +5,9 @@ PART = xc3s1200e-fg320-5
 
 all: fpga_target
 
+sim: mandelsim.c
+       gcc -O3 -lSDL -o mandelsim mandelsim.c -march=pentium3
+
 BITGEN_OPTS = \
        -w \
        -g DebugBitstream:No \
index 16bdf46..2ce2feb 100644 (file)
@@ -5,6 +5,9 @@
 #define YRES 480
 #define MAX_ITER 66
 #define MAXNUM 0x8000
+
+/* be sure to change the number of bits in the multiplier when doing this
+ * bits > 14 need extension of num_t to unsigned int */
 #define BITS 14
 #define BAIL (1 << (BITS + 1))
 #define BAIL_A (1 << BITS)
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