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<DIV>Could these be use on the Master Turbo? If so does anyone have they are willing to sell??</DIV>
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<DIV>Cheers</DIV>
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<DIV>Pete<BR> </DIV>
<DIV>Dr Peter Craven (MBBS Uni. of Qld) <BR>877 Wynnum Rd</DIV>
<DIV>Cannon Hill</DIV>
<DIV>QLD</DIV>
<DIV>Australia 4170</DIV>
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<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: times new roman, new york, times, serif">----- Original Message ----<BR>From: Pete Turnbull <pete@dunnington.plus.com><BR>To: BBC Micro List <bbc-micro@lists.cloud9.co.uk><BR>Sent: Thursday, 8 November, 2007 6:22:33 PM<BR>Subject: Re: [BBC-Micro] ROM / RAM boards...<BR><BR>On 08/11/2007 02:41, Peter Craven wrote:<BR>> How many ROMs could this hold at a time?? Was there any space available <BR>> for SRAM?<BR><BR>The ATPL Sidewise board provides 12 ROM slots, which become slots 4-15 <BR>in the BBC scheme. The original 4 slots on the main board are slots <BR>0-3. Each slot is provided with one 28-pin socket to hold either an 8K <BR>ROM/EPROM or a 16K one (some slots can also hold a 4K device), except <BR>slot 15, which has two sockets, so you can fit a pair of 8K devices if <BR>you prefer, rather than a single 16K one. These two devices have to be <BR>the upper and lower halves of
a single ROM image, though, not two <BR>different smaller images. Those sockets can also hold SRAM chips, and <BR>there's provision to have battery backup for them. It's also possible <BR>to write protect or disable that slot, as we've mentioned.<BR><BR>The board also has sockets for the MOS ROM and the uPD7002 ADC chip, <BR>because it fits into the sockets for those two devices. That's where it <BR>gets address, data and control signals and power. It also has two small <BR>flying leads fitted with connectors to fit in place of link S21, which <BR>is where it gets the rest of the ROM bank control signals it needs.<BR><BR>-- <BR>Pete Peter Turnbull<BR> Network Manager<BR>
University of York<BR><BR>_______________________________________________<BR>bbc-micro mailing list<BR><A href="mailto:bbc-micro@lists.cloud9.co.uk" ymailto="mailto:bbc-micro@lists.cloud9.co.uk">bbc-micro@lists.cloud9.co.uk</A><BR><A href="http://lists.cloud9.co.uk/mailman/listinfo/bbc-micro" target=_blank>http://lists.cloud9.co.uk/mailman/listinfo/bbc-micro</A><BR></DIV><BR></DIV></div><br>
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