ambergrs memory map: 00000-1FFFF: Motherboard RAM 20000-9FFFF: EEMS mapped in conventional A0000-AFFFF: EGA hole, QRAM mapped EEMS B0000-B3FFF: MDA hole, QRAM mapped EEMS B4000-B7FFF: QRAM mapped EEMS B8000-BBFFF: CGA BC000-BFFFF: Empty C0000-C7FFF: EGA/VGA/PGA ROM hole, QRAM mapped UMB (EEMS) C8000-C9FFF: HDD CA000-CBFFF: HDD hole, empty CC000-CDFFF: PC Network hole, empty CE000-CFFFF: NIC RAM D0000-DFFFF: EMS 3.2 page frame E0000-EFFFF: QRAM mapped UMB (EEMS) F0000-FFFFF: ROM Potential allocations: Deallocate 40000-9FFFF motherboard RAM, allocate it to XMA/EEMS/EMS 4.0 Fill EGA, MDA, and between MDA and CGA holes: A0000-B7FFF (will XMA even do this?) Fill the hole between CGA and the ROM hole: BC000-BFFFF Fill the EGA/VGA ROM hole: C0000-C7FFF Fill the D0000-DFFFF ROM space EMS page frame: E0000-EFFFF Total conventional RAM: 736k, 480k bankswitchable Total space to load high: 112k - one block of 64k (D0000-DFFFF), one block of 48k (BC000-C7FFF) Potential conflicts: Lo-Tech XT-CFv3 wants 32k at C8000-CFFFF or D0000-D7FFF - may be able to work around this by putting the boot ROM on the NIC, to reduce it to CA000-CBFFF ambergrs I/O and slot usage map: Slot 1: 218-219 (EEMS), 2C0-2C7? (RTC), 378-37F (LPT1:), 3F8-3FF (COM1:) Slot 2: 3D0-3DF (CGA) Slot 3: 3F0-3F7 (Floppy) Slot 4: Slot 5: 320-323 (HDD) Slot 6: Slot 7: 280-29F (NIC) Slot 8: Potential allocations: COM2: Slot 2+4, 2F8-2FF XT-CFv3: Slot 6 or 8, 300-31F Potential conflicts: ambergrs IRQ map: 2: NIC 3: 4: COM1: 5: HDD 6: Floppy 7: LPT1: Potential allocations: COM2: 3 Potential conflicts: ambergrs DMA map: 1: 2: Floppy 3: HDD Potential allocations: XT-CFv3: 3 Potential conflicts: Two mass storage controllers enter, one leaves. XT-CFv3 can have DMA shut off (at which point, XT-CF-lite makes more sense), though.