From: Lukas Krickl <lukas@krickl.dev>
Date: Tue, 21 Nov 2023 10:41:56 +0000 (+0100)
Subject: WIP: Added register definitions
X-Git-Url: https://git.krickl.dev/?a=commitdiff_plain;h=304f5c327f7731d258cfb2d9c99ed847178b091c;p=ulas%2F.git

WIP: Added register definitions
---

diff --git a/include/ulas.h b/include/ulas.h
index 21f15c8..1783a3f 100644
--- a/include/ulas.h
+++ b/include/ulas.h
@@ -298,6 +298,22 @@ enum ulas_asmdir {
   ULAS_ASMDIR_INCBIN,
 };
 
+enum ulas_asmregs {
+  // r8
+  ULAS_REG_A = 7,
+  ULAS_REG_B = 0,
+  ULAS_REG_C = 1,
+  ULAS_REG_D = 2,
+  ULAS_REG_E = 3,
+  ULAS_REG_H = 4,
+  ULAS_REG_L = 5,
+
+  // r16
+  ULAS_REG_BC,
+  ULAS_REG_DE,
+  ULAS_REG_HL
+};
+
 extern struct ulas_config ulascfg;
 
 struct ulas_config ulas_cfg_from_env(void);
diff --git a/src/ulas.c b/src/ulas.c
index 14164a3..38a1b49 100644
--- a/src/ulas.c
+++ b/src/ulas.c
@@ -1381,12 +1381,15 @@ int ulas_asminstr(char *dst, unsigned long max, const char *line,
   // TODO: check for symbol token here... if so add it
   // and skip to the next token
 
+  // misc / control
   ULAS_STATICINSTR("nop", 1, 0x00);
   ULAS_STATICINSTR("halt", 1, 0x76);
   ULAS_STATICINSTR("stop", 2, 0x10, 0x00);
   ULAS_STATICINSTR("di", 1, 0xF3);
   ULAS_STATICINSTR("ei", 1, 0xFB);
 
+  // 8 bit loads
+
   ULASERR("Invalid instruction '%s'\n", ulas.tok.buf);
   return -1;
 }