Manufacturer “Solid State Leisure”
3 expansions in database
A5000 B5000 B5000 Combo
processor
68020 @ 16.67 MHz, PGA
optional PGA FPU, no MMU
memory
1 MB RAM installed, expandable to 4 MB
32 DIP sockets
takes 256k×4, 80 ns or faster DIPs
non-autoconfiguring
hardware maprom
does not support DMA to its 32 bit RAM, it affects the A590 badly - DMAfix can solve this
notes
connects to the 68000 socket, the 68000 is replaced onto the board
68000 fallback mode - the software can switch from 68030 to 68000 but cannot switch back, the machine has to be switched off
HDToolBox gets confused with the board (it works correctly in fallback mode)
memory is not available in fallback mode
front side
back side
Advert (GB) 1990-06 Advert (GB) 1990-07 Advert (GB) 1990-11 Advert (FR) 1990-11 Advert (GB) 1991-03
processor
68030 @ 25 or 68EC030 @ 40 MHz, PGA
optional 68882 @ 25 - 50 MHz, PGA
memory
1 MB RAM installed, expandable to 4 MB
32 DIP sockets
takes 256k×4, 80 ns or faster DIPs
non-autoconfiguring
hardware maprom
notes
does not support DMA to its 32 bit RAM - DMAfix solves this
after a reboot, DMA into Zorro II memory larger than 512 bytes causes the machine to hang - DMAfix helps here too
68000 fallback mode - the software can switch from 68030 to 68000 but cannot switch back, the machine has to be switched off
memory is not available in fallback mode
Advert (FR) 1990-11 Advert (GB) 1991-03
processor
68030 @ 25 or 68EC030 @ 40 MHz, PGA
optional 68882 @ 25 - 50 MHz, PGA
memory
eight 30 pin SIMM sockets
4 MB RAM installed, expandable to 32 MB
supports 1 or 4 MB, 70 ns SIMMs
accepts SIMMs in groups of four giving 4, 8, 16, 20 or 32 MB RAM
non-autoconfiguring
burst RAM access
hardware maprom
notes
does not support DMA to its 32 bit RAM - DMAfix solves this
after a reboot, DMA into Zorro II memory larger than 512 bytes causes the machine to hang, this affects the A2091 but not the GVP Series II - DMAfix helps here too
68000 fallback mode - the software can switch from 68030 to 68000 but cannot switch back, the machine has to be switched off
memory is not available in fallback mode