From: Robin Krens <robin@robinkrens.nl>
Date: Sat, 11 Jun 2022 20:02:44 +0000 (+0200)
Subject: main: inport calls
X-Git-Url: https://robinkrens.nl/gitweb/?a=commitdiff_plain;h=d8e97c9bdd1e1e67f13f289daa780755ad4d307c;p=swan-dev

main: inport calls
---

diff --git a/src/main.c b/src/main.c
index bd4a86b..6558f99 100644
--- a/src/main.c
+++ b/src/main.c
@@ -45,6 +45,20 @@ void outport(unsigned char portnr, unsigned char val)
 		:);
 }
 
+unsigned char inport(unsigned char portnr)
+{
+	unsigned char val;
+	__asm__(
+		"mov %1, %%dl\n\t"
+		"in (%%dx), %%al\n\t"
+		"mov %%al, %0"
+		: "=r"(val)
+		: "r"(portnr)
+		:);
+
+	return val;
+}
+
 __attribute__ ((naked)) void * dummy_isr(void)
 {
 	int a = 2;
@@ -70,13 +84,17 @@ void init_video(void)
 
 int main(void)
 {
-	lol[0] = 0xDD;
-	lol[1] = 0xDD;
+	outport(0x15, 0x99);
+	unsigned char ret = inport(0x15);
+	
+	lol[0] = 0xAA;
+	lol[1] = ret;
 
 	blaat[0] = 0xEE;
 	blaat[1] = 0xEE;
 	blaat[32] = 0xEE;
 
+
 	setup_ivec();
 	init_video();
 	outport(IO_VIDEO_MODE, VMODE_16C_CHK | VMODE_CLEANINIT);