From 0a898473d056cc4cc2e7418f52c2c95b4a09c955 Mon Sep 17 00:00:00 2001
From: hap <happppp@users.noreply.github.com>
Date: Tue, 26 Jan 2021 12:47:32 +0100
Subject: [PATCH] saitek_egr: add compatibility filter

---
 hash/saitek_egr.xml                   | 2 ++
 src/mame/drivers/saitek_corona.cpp    | 2 +-
 src/mame/drivers/saitek_simultano.cpp | 5 +++--
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/hash/saitek_egr.xml b/hash/saitek_egr.xml
index e2c57a2ad60..c6df74f98aa 100644
--- a/hash/saitek_egr.xml
+++ b/hash/saitek_egr.xml
@@ -13,6 +13,7 @@ license:CC0
 		<description>Endgame ROM (ver. 1)</description>
 		<year>1988</year>
 		<publisher>Saitek</publisher>
+		<sharedfeat name="compatibility" value="egr"/>
 		<part name="extrom" interface="saitek_egr">
 			<dataarea name="rom" size="0x8000">
 				<rom name="egr.bin" size="0x8000" crc="1f9800c8" sha1="6147ad3de65b897fa5f6ab06b2f8597403d6e32e" />
@@ -24,6 +25,7 @@ license:CC0
 		<description>Endgame ROM (ver. 2)</description>
 		<year>1988</year>
 		<publisher>Saitek</publisher>
+		<sharedfeat name="compatibility" value="egr2"/>
 		<part name="extrom" interface="saitek_egr">
 			<dataarea name="rom" size="0x8000">
 				<rom name="egr2.bin" size="0x8000" crc="9f751516" sha1="c46053b0af55856f2a6871d4aa65b3bd0e7d865f" />
diff --git a/src/mame/drivers/saitek_corona.cpp b/src/mame/drivers/saitek_corona.cpp
index d62e10a0b78..710a8119c1e 100644
--- a/src/mame/drivers/saitek_corona.cpp
+++ b/src/mame/drivers/saitek_corona.cpp
@@ -294,7 +294,7 @@ void corona_state::corona(machine_config &config)
 
 	/* extension rom */
 	GENERIC_CARTSLOT(config, "extrom", generic_plain_slot, "saitek_egr");
-	SOFTWARE_LIST(config, "cart_list").set_original("saitek_egr");
+	SOFTWARE_LIST(config, "cart_list").set_original("saitek_egr").set_filter("egr2");
 }
 
 
diff --git a/src/mame/drivers/saitek_simultano.cpp b/src/mame/drivers/saitek_simultano.cpp
index 372e86c281d..788247eb0af 100644
--- a/src/mame/drivers/saitek_simultano.cpp
+++ b/src/mame/drivers/saitek_simultano.cpp
@@ -10,7 +10,7 @@ Two versions are known: "B" from 1988/1989, and "C" from 1989.
 
 Hardware notes:
 - WDC W65C02P @ 5MHz
-- 64KB ROM (2*AMI 27256), socket for 32KB Endgame ROM
+- 64KB ROM (2*AMI 27256), socket for 32KB Endgame ROM (ver. 2)
 - 8KB RAM (SRM2264LC) battery-backed
 - "HELIOS" NEC gate array
 - Epson SED1502F, LCD screen
@@ -21,6 +21,7 @@ with hardware differences: 3MHz R65C02, 1 64KB ROM and no EGR socket.
 
 TODO:
 - where does the IRQ come from? same problem as with stratos
+- verify that egr(1) does not work on real chesscomputer
 
 ***************************************************************************/
 
@@ -336,7 +337,7 @@ void simultano_state::simultano(machine_config &config)
 
 	/* extension rom */
 	GENERIC_CARTSLOT(config, "extrom", generic_plain_slot, "saitek_egr");
-	SOFTWARE_LIST(config, "cart_list").set_original("saitek_egr");
+	SOFTWARE_LIST(config, "cart_list").set_original("saitek_egr").set_filter("egr2");
 }