1 files changed, 78 insertions, 0 deletions
diff --git a/VexRiscvSocSoftware/libs/vga.h b/VexRiscvSocSoftware/libs/vga.h
new file mode 100644
index 0000000..182b968
--- /dev/null
+++ b/VexRiscvSocSoftware/libs/vga.h
@@ -0,0 +1,78 @@
+/*
+ * vga.h
+ *
+ *  Created on: Jul 8, 2017
+ *      Author: spinalvm
+ */
+
+#ifndef VGA_H_
+#define VGA_H_
+#include <stdint.h>
+
+typedef struct {
+	uint32_t hSyncStart ,hSyncEnd;
+	uint32_t hColorStart,hColorEnd;
+
+	uint32_t vSyncStart ,vSyncEnd;
+	uint32_t vColorStart,vColorEnd;
+}Vga_Timing;
+
+static const Vga_Timing vga_h640_v480_r60 = {
+    .hSyncStart  = 96,
+    .hSyncEnd    = 800,
+    .hColorStart = 96 + 16,
+    .hColorEnd   = 800 - 48,
+    .vSyncStart  = 2,
+    .vSyncEnd 	 = 525,
+    .vColorStart = 2 + 10,
+    .vColorEnd 	 = 525 - 33
+};
+
+static const Vga_Timing vga_simRes = {
+    .hSyncStart  = 8,
+    .hSyncEnd    = 70,
+    .hColorStart = 16,
+    .hColorEnd   = 64,
+    .vSyncStart  = 2,
+    .vSyncEnd 	 = 48,
+    .vColorStart = 8,
+    .vColorEnd 	 = 40
+};
+
+static const Vga_Timing vga_simRes_h160_v120 = {
+	.hSyncStart  = 8,
+	.hSyncEnd    = 24+160,
+	.hColorStart = 16,
+	.hColorEnd   = 16+160,
+	.vSyncStart  = 2,
+	.vSyncEnd 	 = 10+120,
+	.vColorStart = 6,
+	.vColorEnd 	 = 6+120
+};
+
+typedef struct
+{
+  volatile uint32_t  STATUS;
+  volatile uint32_t  FRAME_SIZE;
+  volatile uint32_t  FRAME_BASE;
+  volatile uint32_t  DUMMY0[13];
+  volatile Vga_Timing TIMING;
+} Vga_Reg;
+
+static uint32_t vga_isBusy(Vga_Reg *reg){
+	return (reg->STATUS & 2) != 0;
+}
+
+static void vga_run(Vga_Reg *reg){
+	reg->STATUS  = 1;
+}
+
+static void vga_stop(Vga_Reg *reg){
+	reg->STATUS  = 0;
+	while(vga_isBusy(reg));
+}
+
+
+#endif /* VGA_H_ */
+
+