minolta_maxxum_lens_roms Photo Gallery by Pete Ganzel at pbase.com

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Pete Ganzel | profile | all galleries >> Tinkering >> minolta_maxxum_lens_roms

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A collection of photos of ROMS used in Maxxum lenses.

50mm ROM Location.jpg	Minolta 50mm ROM.jpg	Minolta ROM front.jpg
70-210 ROM	QuantaRay2087.jpg	Maxxum 28mm2387.jpg
Sakar28-200.jpg	Quantaray 60-200-2750.jpg	Quantaray 60-200-2754.jpg
Maxxum-35-70-954.jpg	VivitarTelecon1225.jpg	Maxxum 28-135.jpg
Encoder Switches 2461.jpg	Maxxum-Pinouts.jpg	Maxxum Flash Pinouts.jpg
Minolta Maxxxum Dynax Lens Connector Pinouts ROM	Maxxum Lens ROM Pinouts 2r.jpg	Spi Protocol.jpg
Camera Hookup 8173.jpg	Cam Mod 8168.jpg	7000 connector.jpg

comment |

igan		30-Mar-2009 22:45
I have just finished the emulator. At first I successfully emulated on PC using DELPHI and LPT port, and after on 12f629 all positions of my zoom quantaray 60-200. Now it completely works on my sony alpha.

igan		23-Mar-2009 17:38
can you post hex and schem from 12F683?

Rasti		06-Jan-2009 03:47
Hello there, out of necessity I am interested in adapting a lens to my new DSLR. It seems that you are the current expert on the protocol. Would it be possible for you to divulge anything about it? From what I understand it is an SPI interface, somehow not standard SPI (at least the hardware protocol should be the same, addressing is probably different). Thanks Rasti

Mero		22-Jul-2008 06:18
Hi pete, done for the mail ;) i used a 12F683 simply programmed with a jdm programmer. Unfortunatelly, i could not find my prog anymore, done last year, but if i had some time, i will try to re-done it with a 10F.

Pete Ganzel		21-Jul-2008 22:57
Mero: Please leave an e-mail address so I can reply. Which PIC device and programmer are you using? Thanks, Pete

Mero		21-Jul-2008 06:33
I've done a quite simple rom with a PIC chip, ok for old sigmas, but also for manual focus lenses, so you can also have focus confirm & sss...

Andrew Sirenko		26-Feb-2008 20:15
Hello Pete. It’s nice to see that somebody investigate this “hidden” theme so deep. Would you be so kind to give me advise about Sigma AF Tele 400mm f/5.6 lens. My Minolta 7D can’t see this lens. A lot of people who use it say that Sigma 400mm should work without any problem on 7D and Sony Alpha too. I think the main problem is in chip. My lens contains EIS011A (44 pin) – the planar body like in Quantaray lens. Official Sigma service says: “Old lens, no spare parts”. So is it possible to buy this chip or information how to replace it by analogous schematic? Thank you at advance, Andrew.

Rien boluijt		21-Jul-2006 18:14
Hi, I have try again, and it wil work, now I have an extra sign of in focus, of course there must be good light conditions, the lens is a rubina 500mm f5.6 I can set de diafragm,of course the lengt given in exiff is not correct, that is the lengt of the old lens. Rien

Rien boluijt		21-Jul-2006 12:48
Hi, You have done a lot of research Pete! I wonder is there anyone who know the programm in the rom, I was trying to put a rom from a 24-80mm lens in a Russian tele 500mm,for having the green point when it is focussed,I contacted the points of 80mm points togther, but it don't work, as I later realised that the angle of vieuw is important to know for the autofocus system (I think so) I try it on a maxxum 500, you have there the two red pointers,but they both are blinking whotever I did. Do you have any expieriens with this kind of stuff? Best regards, Rien pa3gmi

stephane		03-Mar-2006 18:19
Thanks for thoses pics. Do you know where to find a 50mm 1.4 rom or how to program it ?

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