Modulating print

1 files changed, 3 insertions, 27 deletions

diff --git a/kernel/main.dats b/kernel/main.dats
index e7a68f5..bbec179 100644
--- a/kernel/main.dats
+++ b/kernel/main.dats
@@ -1,16 +1,7 @@
 #include "share/atspre_staload.hats"
 
-%{^
-  #define get_vram(_) ((void *) 0xB8000 + 1988)
-%}
-
-typedef cell = @{ ch = char, attrib = uint8 }
-
-extern fun get_vram {n: nat} (n : size_t n):<> [l: agz] (@[cell][n] @ l | ptr l) = "mac#"
-
-extern prfun eat_vram {l: agz} {n: int} (pf: @[cell][n] @ l): void
-
-extern castfn uint8_of {n: nat} (i: int n): uint8 n
+staload "kernel/writer.sats"
+dynload "kernel/writer.dats"
 
 fn string_length {n:nat} (str: string (n)) : size_t (n) = let
   fun loop {i:nat | i <= n} .<n-i>. (str: string n, i: size_t i): size_t (n) =
@@ -19,19 +10,4 @@ in
   loop (str, i2sz(0))
 end
 
-implement main0 () = let
-  val hello = "Hello world!"
-  val length = string_length hello
-  val color_byte = 0x1f
-  val (pf_vram | vram) = get_vram(length)
-  fun loop {l : agz} {n,i: nat | i <= n} .<n-i>. (pf: !(@[cell][n] @ l) | n : size_t n, i : int i, p : ptr l, str: string (n)) : void = 
-    if n > i then (
-      p->[i] := @{ ch = str[i], attrib = uint8_of color_byte };
-      loop(pf | n,i+1,p,str))
-    else ()
-
-in
-  loop(pf_vram | length, 0, vram, hello);
-  let prval () = eat_vram pf_vram in () end
-end
-
+implement main0 () = print_char('X')