The function of the Raster Memory board is to perform rasterization. This compensation was a result of the Historical Memory Board of Andalusia. The system came with a "1024 word" (1024 byte) memory board populated with 256 bytes. Users may have gone along with that if the memory board were reliable. There he developed and sold an add-on memory board for the Apple II computer. Their 4K memory board used dynamic RAM and it had several design problems. A 1k byte memory board was $176 and the 4k byte was $264.