This kit is a replacement ROMs for Atari ST, STF and MegaST TOS version 1.04 in 2 ROM format. The new ROM are based on the OneROM project. Special pins are use to make the new ROM low profile. This will allow you to fit them easily and place the shield back in place.
You just need to remove the 2 original ROM and place the 2 new ROMs in place.
Open your Atari and check your motherboard before purchasing any TOS ROM set.
Although the fitting of these is a simple task, please be sure that you know what you're doing before fitting. You will need to take your time and take care not to bend the pins.
Some motherboards indicate which Rom is which (Hi-0, Hi-1, etc…), if your board does not have this information, but only Uxx, Uxx… then look for the information online. Other a search for pictures will show you the correct placement.
Some motherboards are designed to accept 2 chips and 6 chips sets. On these boards, 3 solder pads are present to configure the board to use 2 chips (1M) or 6 chips (256K). You must make sure you configure the board to 2 chips (1M). This may require soldering. Make sure you select the language you wish to have programmed on the ROMs
