From 5bebe58857f045454fc2b983468564e19029cd4c Mon Sep 17 00:00:00 2001
From: Alexander Babikov <lemondrops358@gmail.com>
Date: Sat, 1 May 2021 10:23:08 +0500
Subject: [PATCH] Add a version of XTIDE Universal BIOS for 386

---
 src/disk/hdc.c          |  1 +
 src/disk/hdc_xtide.c    | 26 ++++++++++++++++++++++++--
 src/include/86box/hdc.h |  1 +
 3 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/src/disk/hdc.c b/src/disk/hdc.c
index 816e5cef2..9c0a2dbbb 100644
--- a/src/disk/hdc.c
+++ b/src/disk/hdc.c
@@ -110,6 +110,7 @@ static const struct {
     { "ide_isa",		&ide_isa_device			},
     { "ide_isa_2ch",		&ide_isa_2ch_device		},
     { "xtide_at",		&xtide_at_device		},
+    { "xtide_at_386",		&xtide_at_386_device		},
     { "xtide_at_ps2",		&xtide_at_ps2_device		},
     { "xta_wdxt150",		&xta_wdxt150_device		},
     { "xtide_acculogic",	&xtide_acculogic_device		},
diff --git a/src/disk/hdc_xtide.c b/src/disk/hdc_xtide.c
index 54da8e007..c5cb0c153 100644
--- a/src/disk/hdc_xtide.c
+++ b/src/disk/hdc_xtide.c
@@ -49,6 +49,7 @@
 #define ROM_PATH_AT	"roms/hdd/xtide/ide_at.bin"
 #define ROM_PATH_PS2	"roms/hdd/xtide/SIDE1V12.BIN"
 #define ROM_PATH_PS2AT	"roms/hdd/xtide/ide_at_1_1_5.bin"
+#define ROM_PATH_AT_386	"roms/hdd/xtide/ide_386.bin"
 
 
 typedef struct {
@@ -161,8 +162,13 @@ xtide_at_init(const device_t *info)
 
     memset(xtide, 0x00, sizeof(xtide_t));
 
-    rom_init(&xtide->bios_rom, ROM_PATH_AT,
-	     0xc8000, 0x2000, 0x1fff, 0, MEM_MAPPING_EXTERNAL);
+    if (info->local == 1) {
+	rom_init(&xtide->bios_rom, ROM_PATH_AT_386,
+		 0xc8000, 0x2000, 0x1fff, 0, MEM_MAPPING_EXTERNAL);
+    } else {
+	rom_init(&xtide->bios_rom, ROM_PATH_AT,
+		 0xc8000, 0x2000, 0x1fff, 0, MEM_MAPPING_EXTERNAL);
+    }
 
     device_add(&ide_isa_2ch_device);
 
@@ -177,6 +183,13 @@ xtide_at_available(void)
 }
 
 
+static int
+xtide_at_386_available(void)
+{
+    return(rom_present(ROM_PATH_AT_386));
+}
+
+
 static void *
 xtide_acculogic_init(const device_t *info)
 {
@@ -265,6 +278,15 @@ const device_t xtide_at_device = {
     NULL
 };
 
+const device_t xtide_at_386_device = {
+    "PC/AT XTIDE (386)",
+    DEVICE_ISA | DEVICE_AT,
+    1,
+    xtide_at_init, xtide_at_close, NULL,
+    { xtide_at_386_available }, NULL, NULL,
+    NULL
+};
+
 const device_t xtide_acculogic_device = {
     "Acculogic XT IDE",
     DEVICE_ISA,
diff --git a/src/include/86box/hdc.h b/src/include/86box/hdc.h
index 25dcfe0d1..e840de3cf 100644
--- a/src/include/86box/hdc.h
+++ b/src/include/86box/hdc.h
@@ -67,6 +67,7 @@ extern const device_t	xta_hd20_device;		/* EuroPC internal */
 
 extern const device_t	xtide_device;			/* xtide_xt */
 extern const device_t	xtide_at_device;		/* xtide_at */
+extern const device_t	xtide_at_386_device;		/* xtide_at_386 */
 extern const device_t	xtide_acculogic_device;		/* xtide_ps2 */
 extern const device_t	xtide_at_ps2_device;		/* xtide_at_ps2 */