Of course the most valuable would be the version, which remains within the original footprint (swinsid, realpla). But given the state of affairs I doubt anyone will be heavily sniffing at one exceeding it a bit. -- Sent from mobile phone (so please have understanding). On 3 wrz 2013, at 15:15, Bil Herd <bherd@mercury-cg.com> wrote: > I did a quick fitting on some opencores and found that the PIO’s and support chips probably fir in the CPLD’s and that the processors probably didn’t. > > I have a question for anyone that is interested in using FPGA/CPLD emulated parts: How important is it that the PCB of a drop in replacement stay strictly in the foot print of a 40/48 pin chip or is the PCB okay to be wider than .6” once its .3-.4” above the socket it’s inserted into? > > Bil > > From: owner-cbm-hackers@musoftware.de [mailto:owner-cbm-hackers@musoftware.de] On Behalf Of Ed Spittles > Sent: Tuesday, August 27, 2013 4:13 PM > To: cbm-hackers@musoftware.de > Subject: Re: FPGA/CPLD different approach > > For some purposes OHO's GOP board might be a better fit than the GODIL - it's smaller, got fewer pins, but has a 512kByte SRAM on board.. > http://www.trenz-electronic.de/products/fpga-boards/oho-elektronik.html > http://shop.trenz-electronic.de/catalog/default.php?cPath=1_48_137 > > (For simple designs there are CPLD variations, but as noted that's not big enough for a 6502-like CPU, or for ROM or RAM.) > > As noted elsewhere, these boards have 5V level converters, crystals, and on-board EEPROM for configuration. > > Cheers > Ed > > > > On 27 August 2013 11:34, Ingo Korb <ml@akana.de> wrote: > Bil Herd <bherd@mercury-cg.com> writes: > > > I have gone through some test fitting but haven't really checked out > > GODIL, for instance can they program the VCC and Ground pins or do > > they have to physically configure? > > They can be freely configured using jumpers, but as Didier noted the > pinning of those headers is a bit weird. IIRC the DIL pin alternates > between the left and right side of the header and the other pin > alternates between 5V and GND for each row, so you can select GND and 5V > for any DIL pin by setting the jumper either horizontally or > vertically. > > > I suspect that to keep the cost > > down that the PCB might be wider than the .6" DIP but didn’t yet > > research if that’s a show stopper. > > It's much wider and longer - the board is 33.5 mm x 74.3 mm, the DIL > interface at the bottom appears to be centered. The overall height > including the DIL pins is ~20 mm. > > -ik > > Message was sent through the cbm-hackers mailing list > Message was sent through the cbm-hackers mailing listReceived on 2013-09-04 16:00:05
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