From 9283d0e1b0df221bab2f50952c5f685db5aada74 Mon Sep 17 00:00:00 2001
From: SarahW <SarahW@localhost>
Date: Sat, 9 Sep 2017 11:45:02 +0100
Subject: [PATCH] Added Atari PC3 emulation. Patch from dns2k.

---
 src/ibm.h         |  1 +
 src/keyboard_xt.c | 11 +++++++++++
 src/mem.c         |  7 +++++++
 src/model.c       |  1 +
 4 files changed, 20 insertions(+)

diff --git a/src/ibm.h b/src/ibm.h
index e6c8cf3..a4ffc2d 100644
--- a/src/ibm.h
+++ b/src/ibm.h
@@ -428,6 +428,7 @@ enum
 	ROM_IBMPS2_M50,
 	ROM_IBMPS2_M55SX,
 	ROM_IBMPS2_M80,
+        ROM_ATARIPC3,
                 	
         ROM_MAX
 };
diff --git a/src/keyboard_xt.c b/src/keyboard_xt.c
index d7e69bd..b579e68 100644
--- a/src/keyboard_xt.c
+++ b/src/keyboard_xt.c
@@ -116,6 +116,10 @@ uint8_t keyboard_xt_read(uint16_t port, void *priv)
                         else            
                                 temp = 0x6D;
                 }
+                else if ((romset == ROM_ATARIPC3) && (keyboard_xt.pb & 0x80))
+                {
+                        temp = 0x7f;
+                }
                 else
                 {
                         temp = keyboard_xt.pa;
@@ -144,6 +148,13 @@ uint8_t keyboard_xt_read(uint16_t port, void *priv)
                         else
                                 temp = ((mem_size-64) / 32) >> 4;
                 }
+                else if (romset == ROM_ATARIPC3)
+                {
+                        if (keyboard_xt.pb & 0x04)
+                                temp = 0xf;
+                        else
+                                temp = 4;
+                }
                 else
                 {
                         if (keyboard_xt.pb & 0x08)
diff --git a/src/mem.c b/src/mem.c
index a731ddd..30076c0 100644
--- a/src/mem.c
+++ b/src/mem.c
@@ -669,6 +669,13 @@ int loadbios()
                 fclose(f);
                 biosmask = 0x1ffff;
                 return 1;
+				
+                case ROM_ATARIPC3:
+                f=romfopen("ataripc3/AWARD_ATARI_PC_BIOS_3.08.BIN","rb");
+                if (!f) break;
+                fread(rom+0x8000,32768,1,f);
+                fclose(f);
+                return 1;
         }
         printf("Failed to load ROM!\n");
         if (f) fclose(f);
diff --git a/src/model.c b/src/model.c
index eaa424b..f3798cc 100644
--- a/src/model.c
+++ b/src/model.c
@@ -96,6 +96,7 @@ int AMSTRAD, AT, PCI, TANDY;
 MODEL models[] =
 {
         {"[8088] AMI XT clone",           ROM_AMIXT,            "amixt",          { {"",      cpus_8088},        {"",    NULL},         {"",      NULL}},        0, 0,                   64, 640,  64,           xt_init, NULL},
+        {"[8088] Atari PC3",              ROM_ATARIPC3,         "ataripc3",       { {"",      cpus_8088},        {"",    NULL},         {"",      NULL}},        0, 0,                   64, 640,  64,           xt_init, NULL},
         {"[8088] DTK XT clone",           ROM_DTKXT,            "dtk",            { {"",      cpus_8088},        {"",    NULL},         {"",      NULL}},        0, 0,                   64, 640,  64,           xt_init, NULL},
         {"[8088] Generic XT clone",       ROM_GENXT,            "genxt",          { {"",      cpus_8088},        {"",    NULL},         {"",      NULL}},        0, 0,                   64, 640,  64,           xt_init, NULL},
         {"[8088] IBM PC",                 ROM_IBMPC,            "ibmpc",          { {"",      cpus_8088},        {"",    NULL},         {"",      NULL}},        0, 0,                   64, 640,  32,           xt_init, NULL},