27513 EPROM writing?

[b0190]

Hello STUDER expert and fan¡G

I need to replace IC15 (D27513 from Intel) of my STUDER A820 MPU board. Do you have the tool to write program codes onto 27513 (not the more common 27512!)? It is a page mode (4 X 16k) Intel developed to expand coding space without any hardware modification.

I bought a new EPROM programmer (TL866CS) with no luck. Someone went through this process of backing up firmware of A820 MCH by using an old EPROM writer with Commedore 64 PC. But there was no contact information.

http://www.hyperspasm.com/hyperblog/?p=69

I had tried split the original code to four sections and write them by treating 27513 as 27128. Still no clue.

http://personalpages.tds.net/~rcarlsen/cbm/jason-ranheim/promos%20software/booklet/PAGE17.TXT

Thank you in advance.

Yeun-Jung Wu

[Frank Schieschke]

AW: 27513 EPROM writing?

Hello Yeun-Jung,
i am able to program the D27513 device.
Do you have the RAW data or only a readable/working D27513?
What about the shipping costs between Taiwan and Germany and vice versa?

Regards,
Frank

[b0190]

Re: AW: 27513 EPROM writing?

Hello Frank:

Thank you for your help. Searching the net I found a company BuyICNow. They provide a service of writing EPROM if I order the same. Browsing their supply there was no D27513 in stock. But there is an eight page-select EPROM Intel D27C011 (8X 16k X8) ready for shipping. Since D27C011 is a drop-in replacement of D27513, quote from application note, I placed my order and sent in the rom file through e-mail.
Wish to receive my burned D27C011 within 3 working days and hope it will function as well.

As for the extra 512k empty space I have to learn how to disassemble Motorola's 6803 obj code first. Maybe add feature like running a moving icon displaying the mood of music while A820 is singing?

I have the RAW data for IC15, master MPU. I also have a readable/working D27513. Might need you help if D27C011 fall short of hope.

Gruss

Yeun-Jung Wu

Hello Yeun-Jung,
i am able to program the D27513 device.
Do you have the RAW data or only a readable/working D27513?
What about the shipping costs between Taiwan and Germany and vice versa?

Regards,
Frank

[b0190]

Re: 27513 EPROM writing?

I just received my order: a burn Intel D27C011 with uploaded program file!

Moment of Truth.....

I recommend buyICnow as a good place of getting rarely found EPROM and having it programmed.

http://www.buyicnow.com/