I have 2Mb Chip plus 512kB Fast (256kB from Motherboard and 256kB from A1050).With my Rejuv installed (8375 Fatter Agnus), I have 2 MB of ChipRam and no fast ram.
Note that you have several options for organizing the 512K motherboard RAM when the ROM is
selected (jumper J100 open) via jumpers J101 and J102 according to the following truth table:
J101 J102 Function
ON ON C00000H 512K autoconfig
ON OFF C00000H 1 Meg autoconfig
OFF ON 700000H 512K/1 Meg (addmem required)
OFF OFF A80000 - B7FFFF 512K/1 Meg (addmem required)