IBM PC 5150 (64-256) 
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with Super PC BIOS V3.1 and BabyBlue II (BB2) CP/M 2.2 card with RAM

            Mainboard    Exp Card     BB2 (SW3)
DOS memory: 4x64=256 (+) 4x64=256 (+) 3x64=192 (=) 704K (000000-0AFFFF)

BabyBlue II: see manual page 2-17
-------- 123 4567 ---------
BB2 SW1: 111 0001 -> 0E0000
BB2 SW3: 111 0111 -> 080000

tbr, 29.02.2020
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conventional memory: 640K (10 x 64K)
-page-: 0---1---2---3---4---5---6---7---8---9---A---B---C---D---E---F---
000000: bank 0 mainboard 5150 ------------------------------------------  064
010000: bank 1 mainboard 5150 ------------------------------------------  128
020000: bank 2 mainboard 5150 ------------------------------------------  192
030000: bank 3 mainboard 5150 ------------------------------------------ >256<
040000: bank 0 expansion card ------------------------------------------  320
050000: bank 1 expansion card ------------------------------------------  384
060000: bank 2 expansion card ------------------------------------------  448
070000: bank 3 expansion card ------------------------------------------ >512<
080000: bank 1 BabyBlue II ---------------------------------------------  576
090000: bank 2 BabyBlue II ---------------------------------------------  640

        Upper Memory Area (UMA): 384K (3 x 128K)
        1st block: Video RAM Memory
------: 0---1---2---3---4---5---6---7---8---9---A---B---C---D---E---F---
0A0000: bank 3 BabyBlue II --------------------------------------------- >704<
0B0000: MMMM............................................................  768
        
        2nd block: Special Purpose RAM Memory and Adapter ROM
------: 0---1---2---3---4---5---6---7---8---9---A---B---C---D---E---F---
0C0000: ................................................................  832
0D0000: ................................................................  896
        
        3rd block: Adapter ROM, ROM Basic and Motherboard ROM BIOS
------: 0---1---2---3---4---5---6---7---8---9---A---B---C---D---E---F---
0E0000: 2222222222222222222222222222222222222222222222222222222222222222  960
0F0000: ................rrrrrrrrbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbSSSSSSSS 1024 
------: ................|<-U28->|<-U29->|<-U30->|<-U31->|<-U32->|<-U33->

2 = BabyBlue II, CP/M RAM (64K, bank 4/IV, 0E0000-0EFFFF)
b = Cassette ROM BASIC (4 x 8K, U29 to U32)
M = Monochrom Display Adapter (4K, on MDA)
r = optional Motherboard ROM BIOS (8K, U28; not used, empty chip)
S = Super PC BIOS V3.1 (8K, U33)

1 bank = 1 page = 64K
1 block = 2 banks = 128K
. = 1K (unused) -> this memory does not exist physically as RAM/ROM