From dc4fdc1f2fdc4f044b4ea40d74cfedd0d25eddfa Mon Sep 17 00:00:00 2001
From: Bernd Boeckmann <bernd-codeberg@boeckmann.io>
Date: Mon, 17 Apr 2023 16:27:35 +0200
Subject: [PATCH] implement .echo

---
 asm6502.c | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/asm6502.c b/asm6502.c
index 5cd5569..d447309 100644
--- a/asm6502.c
+++ b/asm6502.c
@@ -1336,7 +1336,41 @@ static void directive_endif(char **p, int pass)
 
 static void directive_echo(char **p, int pass)
 {
+   value v;
+   int next;
 
+   if (pass == 1) {
+      skip_to_eol(p);
+      return;
+   }
+
+   do {
+      next = 0;
+      skip_white(p);
+
+      if ( **p == '"') {
+         string_lit(p, filename_buf, STR_LEN);
+         printf("%s", filename_buf);
+      }
+      else {
+         v = expr(p);
+         if (DEFINED(v)) {
+            printf("%u", (unsigned)v.v);
+         }
+         else {
+            printf("?");
+         }
+      }
+
+      skip_white(p);
+      if (**p == ',') {
+         skip_curr_and_white(p);
+         next = 1;
+      }
+   }
+   while (next);
+
+   puts("");
 }
 
 static int directive(char **p, int pass)