Re: FPGA/CPLD different approach

From: didier derny <>
Date: Wed, 04 Sep 2013 14:46:23 +0200
Message-ID: <>

the GODIL is thick probably too thick, but you can get one without the 
connector on the top installed
it is easy to place 2 jumpers (small wires) under the board to connect 
(I only use the connectors on the top to connect a logic analyzer)

btw:  the 48 pin version is not really sold by trenz,  I got mine 
directly from OHO,
           he sent me 2 samples (without the connectors installed) and a 
full set of connectors.

           my main problems with the GODIL was the power consumption, 
far above
           the original circuit, (I was playing with the 6532 and micro kim)


On 04/09/2013 14:25, Istvan Hegedus wrote:
> Hi,
> I would say if the PCB is slightly larger than the original DIP that 
> is not a problem although e.g. in case of the plus 4 you could not use 
> that for TED replacement due to the space in the shield. For me the 
> inside is much more important, to have as accurate emulation as possible.
> The emulation could be used to build a whole system in FPGA (like FPGA64).
> Hege
> *From:* Bil Herd <>
> *Sent:* Tuesday, September 03, 2013 3:15 PM
> *To:* <>
> *Subject:* RE: FPGA/CPLD different approach
> I did a quick fitting on some opencores and found that the PIOís and 
> support chips probably fir in the CPLDís and that the processors 
> probably didnít.
> 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 .6Ē once its .3-.4Ē above the socket 
> itís inserted into?
> Bil
> *From:* 
> <> 
> [ 
> <>] *On Behalf Of *Ed Spittles
> *Sent:* Tuesday, August 27, 2013 4:13 PM
> *To:* <>
> *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..
> (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 < <>> 
> wrote:
> Bil Herd < <>> 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 didnít yet
> > research if thatís 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
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Received on 2013-09-04 13:01:11

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