148. ROM sockets ~~~~~~~~~~~ In addition to the two external cartridge sockets, which can support 4 ROMs, there are 3 spare internal ROM sockets. The only one which works initially is the centre one, (labelled IC27), and this corresponds to ROM slot 8. The rearmost socket, labelled IC37, corresponds to ROM slot 7, but this is normally configured as sideways RAM, (SRAM). To use if for a ROM, shift the nearby link LK19 to the right. The remaining socket at the front is labelled IC41, and corresponds to ROM slot 5, which is also normally configured as SRAM. To bring this into use, shift the nearby link LK18 to the right. Note that in gaining slot 7 as ROM, you lose SRAM slots 6 and 7. Similarly, in gaining ROM slot 5, you lose SRAM slots 4 and 5. This because each slot supports up to 16k, but ROMs can be from 8k up to 32k, and might need to occupy two slots. This means that you won't be able to run BAS128, which needs all 4 slots as SRAM. I've had Disc Doctor, Wordwise-Plus and Printmaster all happily installed and working. When the plug-in cartridges are used, slots 0 to 3 are available for ROMs, so there should be no need to sacrifice SRAM.