Sergey's information on his card is at [here].if i put this card, i need to remove controller original FDC IBM ?
Sergey's information on his card is at [here].
The circuit diagram for the card shows that the card's floppy controller chip sits at the base I/O address of 3F0h, uses interrupt 6, and uses DMA channel 2.
Those are the same as what IBM's 5.25" Diskette Drive Adapter uses.
Therefore, yes, you would need to remove the IBM's 5.25" Diskette Drive Adapter.
The circuit diagram indicates that the base I/O address of 3F0h is fixed at that address (i.e. no jumper/switch configuration, nor no software control).Actually, I'm pretty sure that it can be configured to operate as a secondary FDC in the bios setup.
...I think the BIOS you are writing of is the one used also for the VCF's XT-FDC card (see [here]), a card that has a jumper (JP14) to configure the base I/O address; 'primary FDC' or 'secondary FDC'. On that card, if the I/O address is changed via jumper JP14 to the secondary FDC address, the BIOS on the card would then need to be reconfigured to reflect the secondary FDC address.