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made a snafo on last commit, fixed it now

master
bx 2021-09-02 21:58:24 +01:00
parent eb67ac6c5e
commit a7979dfeab
2 changed files with 13 additions and 13 deletions
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2
assembler.rb
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@ -200,7 +200,7 @@ class Assembler
# load immediate
# TODO: check if we need to use 1 or 2 ops and output that
def li(val, dest)
def li(dest, val)
lui val >> 16, dest
ori dest, val, dest
end

24
main.asm.rb
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@ -21,9 +21,9 @@ label :printf
label :draw_line
# todo: draw line function, take args in a0 - a3
# tood: implement shift left so we can use that to combine x and y co-ords
li $gp0, t0
li t0, $gp0
li 0x40_ffffff, t1 # monochrome line, color ffffff
li t1, 0x40_ffffff # monochrome line, color ffffff
sw t1, 0, t0
# lwi st, t1 # line vert 1
@ -36,27 +36,27 @@ label :start
nop ; nop ; nop ; nop
# THIS IS NEEDED
li $gp1, t0
li 0x03_00_00_00, t1 # display enable
li t0, $gp1
li t1, 0x03_00_00_00 # display enable
sw t1, 0, t0
li $gp0, t0
li t0, $gp0
li 0xe1_000000 + 0b0_0_0_1_0_01_00_0_0000, t1
li t1, 0xe1_000000 + 0b0_0_0_1_0_01_00_0_0000
sw t1, 0, t0
# THIS IS NEEDED
li 0xe4_000000 + (640) + (480 << 10), t1 # Drawing Area bottom right
li t1, 0xe4_000000 + (640) + (480 << 10) # Drawing Area bottom right
sw t1, 0, t0
def line(st, en)
li 0x40_ffffff, t1 # monochrome line, color ffffff
li t1, 0x40_ffffff # monochrome line, color ffffff
sw t1, 0, t0
li st, t1 # line vert 1
li t1, st # line vert 1
sw t1, 0, t0
li en, t1 # line vert 2
li t1, en # line vert 2
sw t1, 0, t0
end
@ -64,13 +64,13 @@ label :start
line 0x0030_0030, 0x0060_0000
line 0x0060_000a, 0x00f0_0060
li l_hello_world, a0
li a0, l_hello_world
jal l_printf
addiu sp, -16, sp # delay slot
addiu sp, 16, sp
label :end_loop
li l_end_loop, t9
li t9, l_end_loop
jr t9
nop