From 8800ed5ef89777ba6c206eb30f31d2894afc99a6 Mon Sep 17 00:00:00 2001
From: Jeff Parsons <Jeff@pcjs.org>
Date: Fri, 22 Apr 2016 07:38:25 -0700
Subject: [PATCH] 1/4 of 8080 opcodes implemented now

---
 modules/pc8080/lib/cpuops.js         | 166 +++++++++++++-
 versions/pc8080/1.21.7/pc8080-dbg.js | 330 +++++++++++++--------------
 versions/pc8080/1.21.7/pc8080.js     | 187 +++++++--------
 3 files changed, 421 insertions(+), 262 deletions(-)

diff --git a/modules/pc8080/lib/cpuops.js b/modules/pc8080/lib/cpuops.js
index 15f89928b..0a194ba87 100644
--- a/modules/pc8080/lib/cpuops.js
+++ b/modules/pc8080/lib/cpuops.js
@@ -541,6 +541,164 @@ CPUDef.opCMA = function()
     this.nStepCycles -= 4;
 };
 
+/**
+ * op=0x31 (LXI SP,d16)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opLXISP = function()
+{
+    this.setSP(this.getPCWord());
+    this.nStepCycles -= 10;
+};
+
+/**
+ * op=0x32 (STA a16)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opSTA = function()
+{
+    this.setByte(this.getPCWord(), this.regA);
+    this.nStepCycles -= 13;
+};
+
+/**
+ * op=0x33 (INX SP)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opINXSP = function()
+{
+    this.setSP(this.getSP() + 1);
+    this.nStepCycles -= 5;
+};
+
+/**
+ * op=0x34 (INR M)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opINRM = function()
+{
+    var addr = this.getHL();
+    this.setByte(addr, this.incByte(this.getByte(addr)));
+    this.nStepCycles -= 10;
+};
+
+/**
+ * op=0x35 (DCR M)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opDCRM = function()
+{
+    var addr = this.getHL();
+    this.setByte(addr, this.decByte(this.getByte(addr)));
+    this.nStepCycles -= 10;
+};
+
+/**
+ * op=0x36 (MVI M,d8)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opMVIM = function()
+{
+    this.setByte(this.getHL(), this.getPCByte());
+    this.nStepCycles -= 10;
+};
+
+/**
+ * op=0x37 (STC)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opSTC = function()
+{
+    this.setCF();
+    this.nStepCycles -= 4;
+};
+
+/**
+ * op=0x39 (DAD SP)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opDADSP = function()
+{
+    var w;
+    this.setSP(w = this.getHL() + this.getSP());
+    this.resultZeroCarry = (this.resultZeroCarry & 0xff) | ((w >> 8) & 0x100);
+    this.nStepCycles -= 10;
+};
+
+/**
+ * op=0x3A (LDA a16)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opLDA = function()
+{
+    this.regA = this.getByte(this.getPCWord());
+    this.nStepCycles -= 13;
+};
+
+/**
+ * op=0x3B (DCX SP)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opDCXSP = function()
+{
+    this.setSP(this.getSP() - 1);
+    this.nStepCycles -= 5;
+};
+
+/**
+ * op=0x3C (INR A)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opINRA = function()
+{
+    this.regA = this.incByte(this.regA);
+    this.nStepCycles -= 5;
+};
+
+/**
+ * op=0x3D (DCR A)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opDCRA = function()
+{
+    this.regA = this.decByte(this.regA);
+    this.nStepCycles -= 5;
+};
+
+/**
+ * op=0x3E (MVI A,d8)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opMVIA = function()
+{
+    this.regA = this.getPCByte();
+    this.nStepCycles -= 7;
+};
+
+/**
+ * op=0x3F (CMC)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opCMC = function()
+{
+    this.updateCF(!this.getCF());
+    this.nStepCycles -= 4;
+};
+
 /**
  * opTBD()
  *
@@ -573,10 +731,10 @@ CPUDef.aOps = [
     /* 0x24-0x27 */ CPUDef.opINRH,  CPUDef.opDCRH,  CPUDef.opMVIH,  CPUDef.opDAA,
     /* 0x28-0x2B */ CPUDef.opNOP,   CPUDef.opDADH,  CPUDef.opLHLD,  CPUDef.opDCXH,
     /* 0x2C-0x2F */ CPUDef.opINRL,  CPUDef.opDCRL,  CPUDef.opMVIL,  CPUDef.opCMA,
-    /* 0x30-0x33 */ CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,
-    /* 0x34-0x37 */ CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,
-    /* 0x38-0x3B */ CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,
-    /* 0x3C-0x3F */ CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,
+    /* 0x30-0x33 */ CPUDef.opNOP,   CPUDef.opLXISP, CPUDef.opSTA,   CPUDef.opINXSP,
+    /* 0x34-0x37 */ CPUDef.opINRM,  CPUDef.opDCRM,  CPUDef.opMVIM,  CPUDef.opSTC,
+    /* 0x38-0x3B */ CPUDef.opNOP,   CPUDef.opDADSP, CPUDef.opLDA,   CPUDef.opDCXSP,
+    /* 0x3C-0x3F */ CPUDef.opINRA,  CPUDef.opDCRA,  CPUDef.opMVIA,  CPUDef.opCMC,
     /* 0x40-0x43 */ CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,
     /* 0x44-0x47 */ CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,
     /* 0x48-0x4B */ CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,
diff --git a/versions/pc8080/1.21.7/pc8080-dbg.js b/versions/pc8080/1.21.7/pc8080-dbg.js
index a2f648ffb..d0be8e4a4 100644
--- a/versions/pc8080/1.21.7/pc8080-dbg.js
+++ b/versions/pc8080/1.21.7/pc8080-dbg.js
@@ -1,171 +1,171 @@
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