> Still, it would have to be "reasonably priced". That's the kicker for me, as well. When I was thinking about a CPLD, I was thinking VERY reasonably priced... because online SystemVerilog source is "free", and (unless I am mistaken) relatively portable. On Wed, Apr 23, 2014 at 8:38 AM, Pete Rittwage <firstname.lastname@example.org> wrote: > On Tue, April 22, 2014 9:20 pm, Clockmeister wrote: > > > > On 23/04/2014 8:40 AM, Julian Perry wrote: > >> Re: 'Frankenstein' Disk Drives, Done Cheap While we're on the subject > >> of modern takes of old Commodore, kit, THIS PROJECT - C64 Reloaded > >> <http://wiki.icomp.de/wiki/C64_reloaded> - is a novel idea. > >> > >> It's basically a redesigned C64 board, fully populated, sans Processor > >> and SID. It has a couple of interesting points. > >> > >> 1: it has no RF modulator, only an Svideo output. Since the RF > >> modulator is responsible for the chroma signal bleed into the > >> luminance signal, it would be interesting to see what the video output > >> quality is like - and whether the circuit can be easily adapted to > >> existing boards. > >> 2: One of the design simplifications was to run off a single 12VDC > >> supply, and generate all voltages from this one source. In particular, > >> the 9VAC is needed both with early breadboards (which used this to > >> generate the VIC VCC), and for ALL units to generate the power for the > >> tape drive, and external power for the USER port. The AC component was > >> used to generate the clock signal for the TOD pin in the 2 6526 CIA's. > >> Jim, amongst many others would be very interested in seeing how this > >> has been accomplished in this board.. the component count looks quite > >> small. > >> 3: there is provision for a workaround for silent memory corruptions > >> caused by memory refresh glitches, when fooling around with the VIC > >> chip timing (a technique called VSP). Having witnessed the problem > >> first hand (and "fixed" it by retrofitting NOS RAM in my own machine) > >> - I'd like to know how this has been achieved. > >> > > > > > > Certainly some points of interest in terms of the items you outline and > > using them for the classic board, but no interest in terms of purchasing > > it. > > > > I'd rather stick with an almost infinitely repairable classic board with > > all through-hole technology myself, particularly since I have already > > fully socketed a couple of boards. > > > > I would much rather see something where I transfer the chips to a much > more capable board, not a reproduction of the old one. I don't have > problems finding original boards that still work... there's still millions > of them in the US. > > Something with full 1541 emulation from SD, multiple SIDs, removal of AEC > lines from video output, standard power supply, regular serial/parallel > ports, etc. > > Still, it would have to be "reasonably priced". > > -Pete > > > Message was sent through the cbm-hackers mailing list > Message was sent through the cbm-hackers mailing listReceived on 2014-04-23 14:01:54
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