From 481301023e26fc919dd9f9206369ac485670728a Mon Sep 17 00:00:00 2001
From: bx <bx@tilde.town>
Date: Tue, 31 Aug 2021 17:32:08 +0100
Subject: [PATCH] we now have lines!

---
 assembler.rb | 56 ++++++++++++++++++++++++++++++++++++++++------------
 1 file changed, 43 insertions(+), 13 deletions(-)

diff --git a/assembler.rb b/assembler.rb
index 202487e..cde3e97 100644
--- a/assembler.rb
+++ b/assembler.rb
@@ -136,6 +136,11 @@ end
 
 
 
+
+def label
+	return $bytes.length + $base_addr
+end
+
 # this is a terrible idea and im doing it
 #$labels = {}
 #def method_missing(m, *args)
@@ -148,6 +153,7 @@ end
 $base_addr = 0x80010000 # 0x10000 # 0x80010000
 $file_size = 0x800 * 3
 $gp0 = 0x1F801810
+$gp1 = 0x1F801814
 
 # # # EXE HEADER # # #
 string "PS-X EXE"
@@ -172,25 +178,49 @@ $bytes = []
 
 
 # # # PROGRAM CODE # # #
-nop ; jmp $base_addr + 16 ; nop ; word 0xdeadbeef
+nop
 
 # ops should always be in format of
 # src [args] -> dest
 
-lwi $gp0, 1
+# THIS IS NEEDED
+lwi $gp1, t0
+lwi 0x03_00_00_00, t1 # display enable
+sw t1, 0, t0
 
+lwi $gp0, t0
+
+lwi 0xe1_000000 + 0b0_0_0_1_0_01_00_0_0000, t1
+sw t1, 0, t0
+
+# THIS IS NEEDED
+lwi 0xe4_000000 + (640) + (480 << 10), t1 # Drawing Area bottom right
+sw t1, 0, t0
+
+def line(st, en)
+	lwi 0x40_ffffff, t1 # monochrome line, color ffffff
+	sw t1, 0, t0
+
+	lwi st, t1 # line vert 1
+	sw t1, 0, t0
+
+	lwi en, t1 # line vert 2
+	sw t1, 0, t0
+end
+
+l_end_loop = label
+line 0x0010_0010, 0x0030_0030
+line 0x0030_0030, 0x0060_0000
+line 0x0060_0000, 0x00f0_0060
+
+nop ; nop ; nop ; nop
+nop ; nop ; nop ; nop
+nop ; nop ; nop ; nop
+nop ; nop ; nop ; nop
+
+# l_end_loop = label
 nop
-
-lwi 0x10040, 2
-
-sw 1, 0, 2
-
-nop ; nop ; nop ; nop
-nop ; nop ; nop ; nop
-nop ; nop ; nop ; nop
-nop ; nop ; nop ; nop
-
-jmp $base_addr
+jmp l_end_loop
 nop