diff --git a/src/emu/machine/ataflash.c b/src/emu/machine/ataflash.c
index 62a127997f8..0e0b3221540 100644
--- a/src/emu/machine/ataflash.c
+++ b/src/emu/machine/ataflash.c
@@ -45,6 +45,7 @@ READ16_MEMBER( ata_flash_pccard_device::read_memory )
 {
 	if(offset <= 7)
 	{
+		m_8bit_data_transfers = !ACCESSING_BITS_8_15; // HACK
 		return read_cs0(space, offset, mem_mask);
 	}
 	else if(offset <= 15)
@@ -61,6 +62,7 @@ WRITE16_MEMBER( ata_flash_pccard_device::write_memory )
 {
 	if(offset <= 7)
 	{
+		m_8bit_data_transfers = !ACCESSING_BITS_8_15; // HACK
 		write_cs0(space, offset, data, mem_mask);
 	}
 	else if( offset <= 15)