RE: Mitsubishi Melcard (edge connect type)
After digging a bit further and disassembling a card I have here which was defective and peeling apart. I now know that this is a Seiko-Epson not a Mitsubishi Melcard. Seiko-Epson are 40 Contact Traces. Mitsubishi are 50 Contact Traces. I also found a data sheet from the p/n silk screened on the PWB of the card here: https://www.datasheetarchive.com/pdf/download.php?id=11082c69f543ba2dc23ee78386ce2ce49debd2=O=EPC032IEC0 Thanks for giving me a shove in the right direction. Don Resor -Original Message- From: cctalk On Behalf Of D. Resor via cctalk Sent: Sunday, April 11, 2021 5:09 PM To: 'Alexandre Souza' ; 'General Discussion: On-Topic and Off-Topic Posts' Subject: RE: Mitsubishi Melcard (edge connect type) I don't know. I do know that Roland also used something similar though the length of some of the contact points are different from the Mitsubishi Melcard. Don Resor -Original Message- From: cctalk On Behalf Of Alexandre Souza via cctalk Sent: Sunday, April 11, 2021 10:38 AM To: Chuck Guzis ; General Discussion: On-Topic and Off-Topic Posts Subject: Re: Mitsubishi Melcard (edge connect type) Isnt that the epson card standard? Enviado do meu Tele-Movel Em dom, 11 de abr de 2021 14:37, Chuck Guzis via cctalk < cctalk@classiccmp.org> escreveu: > On 4/11/21 7:08 AM, D. Resor via cctalk wrote: > > Does anyone recall what kind of hardware/software was used to > > read/write > the > > early Mitsubishi Melcard EPROM cards with the PCB edge connector > contacts? > > > > It was explained to me by someone that a EPROM programmer could be > > used, however I've never seen a socket which fits the edge card > > connector of > these > > cards. > > I don't know if it's exactly what you're looking for, but there's a > potload of information on Bitsavers, starting with PDF page 115: > > > http://www.bitsavers.org/pdf/mitsubishi/Mitsubishi_VLSI_MOS_Memory_RAM > _ROM_and_Memory_Cards_Jan91.pdf > > --Chuck > >
RE: Mitsubishi Melcard (edge connect type)
I don't know. I do know that Roland also used something similar though the length of some of the contact points are different from the Mitsubishi Melcard. Don Resor -Original Message- From: cctalk On Behalf Of Alexandre Souza via cctalk Sent: Sunday, April 11, 2021 10:38 AM To: Chuck Guzis ; General Discussion: On-Topic and Off-Topic Posts Subject: Re: Mitsubishi Melcard (edge connect type) Isnt that the epson card standard? Enviado do meu Tele-Movel Em dom, 11 de abr de 2021 14:37, Chuck Guzis via cctalk < cctalk@classiccmp.org> escreveu: > On 4/11/21 7:08 AM, D. Resor via cctalk wrote: > > Does anyone recall what kind of hardware/software was used to > > read/write > the > > early Mitsubishi Melcard EPROM cards with the PCB edge connector > contacts? > > > > It was explained to me by someone that a EPROM programmer could be > > used, however I've never seen a socket which fits the edge card > > connector of > these > > cards. > > I don't know if it's exactly what you're looking for, but there's a > potload of information on Bitsavers, starting with PDF page 115: > > > http://www.bitsavers.org/pdf/mitsubishi/Mitsubishi_VLSI_MOS_Memory_RAM > _ROM_and_Memory_Cards_Jan91.pdf > > --Chuck > >
Re: Mitsubishi Melcard (edge connect type)
Isnt that the epson card standard? Enviado do meu Tele-Movel Em dom, 11 de abr de 2021 14:37, Chuck Guzis via cctalk < cctalk@classiccmp.org> escreveu: > On 4/11/21 7:08 AM, D. Resor via cctalk wrote: > > Does anyone recall what kind of hardware/software was used to read/write > the > > early Mitsubishi Melcard EPROM cards with the PCB edge connector > contacts? > > > > It was explained to me by someone that a EPROM programmer could be used, > > however I've never seen a socket which fits the edge card connector of > these > > cards. > > I don't know if it's exactly what you're looking for, but there's a > potload of information on Bitsavers, starting with PDF page 115: > > > http://www.bitsavers.org/pdf/mitsubishi/Mitsubishi_VLSI_MOS_Memory_RAM_ROM_and_Memory_Cards_Jan91.pdf > > --Chuck > >
Re: Mitsubishi Melcard (edge connect type)
On 4/11/21 7:08 AM, D. Resor via cctalk wrote: > Does anyone recall what kind of hardware/software was used to read/write the > early Mitsubishi Melcard EPROM cards with the PCB edge connector contacts? > > It was explained to me by someone that a EPROM programmer could be used, > however I've never seen a socket which fits the edge card connector of these > cards. I don't know if it's exactly what you're looking for, but there's a potload of information on Bitsavers, starting with PDF page 115: http://www.bitsavers.org/pdf/mitsubishi/Mitsubishi_VLSI_MOS_Memory_RAM_ROM_and_Memory_Cards_Jan91.pdf --Chuck
Mitsubishi Melcard (edge connect type)
Does anyone recall what kind of hardware/software was used to read/write the early Mitsubishi Melcard EPROM cards with the PCB edge connector contacts? It was explained to me by someone that a EPROM programmer could be used, however I've never seen a socket which fits the edge card connector of these cards. I've uploaded an image of the edge contact end of this type of card here: http://www.hammondorganservice.com/downloads/images/melcard.jpg Seems these were also available in the SRAM variety as well. Thanks Don Resor
