MCUmall EPROM BIOS Chip Burner Forum
MCUmall EPROM BIOS Chip Burner Forum
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 Blank fill 16K on 27512 EPROM		  New Topic  Reply to Topic
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Yurkie

USA
3 Posts
Posted - 06/08/2012 :  05:41:52  Show Profile  Reply with Quote
I want to burn a 48K binary on a 64K EPROM. I believe the "fill buffer" function is the way to do it, but I have no idea what values to type into the boxes. I am trying to do this using the GQ-4X burner that I bought off this site.
Reply #1

Bad_Ad84

210 Posts
Posted - 06/08/2012 :  05:54:54  Show Profile  Reply with Quote
just burn it. the rest of the chip will be left empty
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Reply #2

Yurkie

USA
3 Posts
Posted - 06/08/2012 :  06:01:33  Show Profile  Reply with Quote
that doesn't work.

When I want to put 16K on a 32K , I can lie and say a 27126 is inserted in burner instead of a 27256 and it works. However I don't think there is a selection for a 48K EPROM.
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Reply #3

ZLM

2945 Posts
Posted - 06/08/2012 :  08:30:56  Show Profile  Reply with Quote
Yurkie, your way is not correct. If your chip is 27C256, then you must select 27C256 from software. Then load any size data. You do not need to care the rest of buffer. It can be anything. By default, it is FF.
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Reply #4

Yurkie

USA
3 Posts
Posted - 06/08/2012 :  10:07:25  Show Profile  Reply with Quote
Can someone just give me the "fill buffer with data" values to plug in to fill the first 16k. Sorry ZLM in most cases I am sure you are right but for Atari 7800 binaries it doesn't work that way.
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Reply #5

ZLM

2945 Posts
Posted - 06/08/2012 :  17:00:17  Show Profile  Reply with Quote
if you do not want to load the data into first 16KB, then you can just put the file offset value: 3FFF in the file open option window.

Then the data will be loaded from 4000 address.

You also can fill the data to the first half buffer with fill command: FILL 00 0000 3FFF

OR

FILL FF 0000 3FFF

The first fill command fill the 00 data from address 0000 to 3FFF
the second command fill the FF data from address 0000 to 3FFF

You can change to any data to fill as you wanted.
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Reply #6

Bad_Ad84

210 Posts
Posted - 06/09/2012 :  10:00:28  Show Profile  Reply with Quote
Your first post didnt mention you wanted to program after the first 16kb.

So how is anyone supposed to help? =/
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