What kinds of cards will work in the slots on a 1000?
The EX and HX will require special cards made for them, unless you make an adapter (see section II.I.1.). Other systems can use most standard 8-bit cards. The cards will need to be 10″ in length or shorter to fit in the case (“1/2 length” or “3/4 length”). The types of cards to watch out for here are hard cards and EMS cards – it’s mostly very old cards that are too long (the original 8-bit IBM VGA card is too long, as is the original Xebec hard drive controller). Only the RSX’s can take 16-bit cards – though some 16-bit cards will work in an 8-bit slot (some ISA VGA controllers, for example). The slots on the original 1000, A, HD, SX, and TX are physically the same as a standard 8-bit slot, but differ in some signals. On the original 1000 and 1000A, there is no DMA unless a memory expansion card is installed. Models up to the TX also use IRQ 5 for vertical sync and will require a hard drive controller that uses IRQ 2 (on the SX and TX you can flip a switch on the motherboard to disabl
