diff --git a/src/mame/drivers/apple2e.cpp b/src/mame/drivers/apple2e.cpp
index 8ec2c16e64a..3ec6f5cacd8 100644
--- a/src/mame/drivers/apple2e.cpp
+++ b/src/mame/drivers/apple2e.cpp
@@ -5524,7 +5524,7 @@ ROM_START(cecm)
 
 	ROM_REGION(0x800,"keyboard",0)
 	ROM_LOAD( "u26.9433c-0201.rcl-zh-16.bin", 0x000000, 0x000800, CRC(f3190603) SHA1(7efdf6f4ee0ed01ff06341c601496a43d06afd6b) )
-	// ROM_LOAD( "u10_2732_0081.bin", 0x000000, 0x001000, CRC(505eed67) SHA1(4acbee7c957528d1f9fbfd54464f85fb493175d7) )
+	// ROM_LOAD( "u10_2732_0081.bin", 0x000000, 0x00800, CRC(505eed67) SHA1(4acbee7c957528d1f9fbfd54464f85fb493175d7) )
 ROM_END
 
 ROM_START(cec2000)
diff --git a/src/mame/drivers/at.cpp b/src/mame/drivers/at.cpp
index 1b09180c8a3..2212c7e03e2 100644
--- a/src/mame/drivers/at.cpp
+++ b/src/mame/drivers/at.cpp
@@ -2224,7 +2224,7 @@ ROM_START( magb233 )
 	ROM_REGION16_LE(0x20000, "bios", 0)  // BIOS-String: DSUN-1105-043089-K0
 	ROMX_LOAD( "magitronic_b233_ami_1986_286_bios_plus_even_sa027343.bin", 0x10000, 0x8000, CRC(d4a18444) SHA1(d95242104fc9b51cf26de72ef5b6c52d99ccce30), ROM_SKIP(1) )
 	ROMX_LOAD( "magitronic_b233_ami_1986_286_bios_plus_odd_sa027343.bin", 0x10001, 0x8000, CRC(7ac3db56) SHA1(4340140450c4f8b4f6a19eae50a5dc5449edfdf6), ROM_SKIP(1) )
-	// ROM_LOAD("magitronic_b233_ami_1986_keyboard_bios_plus_a025352.bin", 0x0000, 0x1000), CRC(84fd28fd) SHA1(43da0f49e52c921844e60b6f3d22f2a316d865cc) )
+	// ROM_LOAD("magitronic_b233_ami_1986_keyboard_bios_plus_a025352.bin", 0x0000, 0x0800), CRC(84fd28fd) SHA1(43da0f49e52c921844e60b6f3d22f2a316d865cc) )
 ROM_END
 
 // Magitronic B236 (ISA8: 2, ISA16: 6) - 286 Modular BIOS Version 3.03GX
@@ -2561,7 +2561,7 @@ ROM_START( atariabc286 )
 	ROM_LOAD16_BYTE( "ami_pc4x_1.x_odd.bin", 0x10001, 0x8000, CRC(0891fd25) SHA1(4722b1db1b2c985c67f9a9b807ce68c06a905232))
 
 	// ROM_REGION(0x40000, "ega", 0)
-	// ROM_LOAD( "p82c441_ega_bios_v1.0.6.bin", 0x00000, 0x40000, BAD_DUMP CRC(80c11ef2) SHA1(90852d3cbb64504c8d57b469a594c22c247c9a39))
+	// ROM_LOAD( "p82c441_ega_bios_v1.0.6.bin", 0x00000, 0x08001, BAD_DUMP CRC(80c11ef2) SHA1(90852d3cbb64504c8d57b469a594c22c247c9a39))
 ROM_END
 
 // Profex PC 33 - Chipset: SUNTAC ST62BC004-B1, ST62BC003-B, ST62C008, ST62C005-B, ST62BC001-B, ST72BC002-B
@@ -2648,8 +2648,8 @@ ROM_END
 // CPU card W26361-D458-Z4-06-05, Piggyback MFM controller with WDC WD42C22A-JU PROTO chip W26361-D477-Z2-04-05
 // Chips: Intel N82230-2, Intel N82231-2, WDC WD37C65BJM, VLSI 8831AM/X12012/VL16C452-QC
 // VGA card: S26361-D463 GS3 using a Video Seven 458-0023
-	// ROM_LOAD( "vga_nmc27c256q_435-0029-04_1988_video7_arrow.bin", 0x8000, 0x0800, CRC(0d8d7dff) SHA(cb5b2ab78d480ec3164d16c9c75f1449fa81a0e7) ) // Video7 VGA card
-	// ROM_LOAD( "vga_nmc27c256q_435-0030-04_1988_video7_arrow.bin", 0x8000, 0x0800, CRC(0935c003) SHA(35ac571818f616b856da8bbf6a7a9172f68b3ab6) )
+	// ROM_LOAD( "vga_nmc27c256q_435-0029-04_1988_video7_arrow.bin", 0x8000, 0x8000, CRC(0d8d7dff) SHA(cb5b2ab78d480ec3164d16c9c75f1449fa81a0e7) ) // Video7 VGA card
+	// ROM_LOAD( "vga_nmc27c256q_435-0030-04_1988_video7_arrow.bin", 0x8000, 0x4000, CRC(0935c003) SHA(35ac571818f616b856da8bbf6a7a9172f68b3ab6) )
 ROM_START( pcd2 )
 	ROM_REGION16_LE(0x20000,"bios", 0)
 	ROM_LOAD16_BYTE( "bios_tandon_188782-032a_rev_5.21_low.bin", 0x10000, 0x8000, CRC(a8fbffd3) SHA1(8a3ad5bc7f86ff984be10a8b1ae4542be4c80e5f) )
@@ -2806,7 +2806,7 @@ ROM_START( comportiii )
 	ROM_SYSTEM_BIOS(0, "106779-002", "106779-002")
 	ROMX_LOAD( "cpiii_87c128_106779-002.bin", 0x18000, 0x4000, CRC(aef8f532) SHA1(b0374d5aa8766f11043cbaee007e6d311f792e44), ROM_SKIP(1) | ROM_BIOS(0) )
 	ROMX_LOAD( "cpiii_87c128_106778-002.bin", 0x18001, 0x4000, CRC(c259f628) SHA1(df0ca8aaead617114fbecb4ececbd1a3bb1d5f30), ROM_SKIP(1) | ROM_BIOS(0) )
-	// ROM_LOAD( "cpiii_106436-001.bin", 0x0000, 0x1000, CRC(5acc716b) SHA(afe166ecf99136d15269e44ebf2d66317945bf9c) ) // keyboard
+	// ROM_LOAD( "cpiii_106436-001.bin", 0x0000, 0x0800, CRC(5acc716b) SHA(afe166ecf99136d15269e44ebf2d66317945bf9c) ) // keyboard
 	ROM_SYSTEM_BIOS(1, "109737-002", "109737-002")
 	ROMX_LOAD( "109738-002.bin", 0x10000, 0x8000, CRC(db131b8a) SHA1(6a8517a771272edf16870501fc1ed94c7555ef45), ROM_SKIP(1) | ROM_BIOS(1) )
 	ROMX_LOAD( "109737-002.bin", 0x10001, 0x8000, CRC(8463cc41) SHA1(cb9801591e4a2cd13bbcc40739c9e675ba84c079), ROM_SKIP(1) | ROM_BIOS(1) )
@@ -2836,7 +2836,7 @@ ROM_END
 // Nixdorf 8810 M16 Laptop - PC17 - VGA version - boot from harddisk doesn't work
 // Chipset: MX8945G/MX16C4520C, Chps P82C212B-12, P82C215, P82C206, WD37C65BJM, P82C211-12, Chips F82C455,
 ROM_START( n8810m16v )
-	// ROM_LOAD("8810m16vga_27c256_221vb_123g1.bin", 0x00000, 0x4000, CRC(3bc80739) SHA1(3d6d7fb01681eccbc0b560818654d5aa1e3c5230)) // C&T VGA BIOS for 82C455
+	// ROM_LOAD("8810m16vga_27c256_221vb_123g1.bin", 0x00000, 0x8000, CRC(3bc80739) SHA1(3d6d7fb01681eccbc0b560818654d5aa1e3c5230)) // C&T VGA BIOS for 82C455
 	ROM_REGION16_LE(0x20000, "bios", 0 )
 	ROM_LOAD16_BYTE( "8810m16vga_27c256_286bios_a2531511_a.bin", 0x10000, 0x8000, CRC(1de5e49b) SHA1(759878e13801278de96700bbef318a49cca68054))
 	ROM_LOAD16_BYTE( "8810m16vga_27c256_286bios_a2531511_b.bin", 0x10001, 0x8000, CRC(a65cf1f8) SHA1(30d46b49e87f272540e24a278848122b3c40bdaf))