new ui, control panel kinda works, display works, framebuffer works, serial write works. widget for registers works. next is serial input and the editor

2026-03-13 04:30:32 +00:00
parent 6da473c272
commit e1705efe7c
46 changed files with 1470 additions and 1613 deletions
@@ -0,0 +1,65 @@
+
+include print: "./print.dsa"
+
+db success: "Success!"
+dw framebuffer: 0x30000
+dw stack: 0x10000
+
+_init:
+    ldw stack, bpr
+    mov bpr, spr
+
+start:
+    ldw framebuffer, rg0    // rg0 = display base address
+    lli 0, rg1          // rg1 = y (0..240)
+
+y_loop:
+    lli 0, rg2          // rg2 = x (0..320)
+
+x_loop:
+    // red = x >> 1 (0..159, left to right gradient)
+    shr rg2, zero, 1, rg4
+
+    // green = y (0..239, top to bottom gradient)
+    mov rg1, rg5
+
+    // blue = constant 128
+    lli 0x80, rg6
+
+    // pack as 0xAABBGGRR (LE reads as RGBA)
+    // start with red in bits 0-7
+    mov rg4, rg7
+
+    // green into bits 8-15
+    shl rg5, zero, 8, rg5
+    or rg7, rg5, rg7
+
+    // blue into bits 16-23
+    shl rg6, zero, 16, rg6
+    or rg7, rg6, rg7
+
+    // alpha into bits 24-31
+    lli 0xFF, rg6
+    shl rg6, zero, 24, rg6
+    or rg7, rg6, rg7
+
+    stw rg7, rg0            // write pixel
+    addi rg0, 4, rg0        // next pixel
+
+    addi rg2, 1, rg2
+    lli 320, rg6
+    ilt rg2, rg6, rg6
+    jnz rg6, x_loop
+
+    addi rg1, 1, rg1
+    lli 240, rg6
+    ilt rg1, rg6, rg6
+    jnz rg6, y_loop
+
+
+_end:
+    lwi success: rg0
+    push rg0
+    call print::print
+    pop zero
+    hlt