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KML85

Sweden
5 Posts
Posted - 04/20/2022 :  06:14:51  Show Profile  Reply with Quote
Hi

Im trying to understand how to add my own chip to read the data.
the chips are very similar to say 27C010 but with a few pins in other locations and also thc ROM is just 28pin not 32pin

128KB ROM in 28 pin package

only things that is different is:
OE on the eprom is A16 (pin 24 on eprom) on the ROM and pin 28 on the ROM is VCC (on eprom its NC)

Can someone explain how I can add a custom device for this?
I have read the rom successfully by manualy re-routing the pins with wires

regards
Reply #1

anniel

2572 Posts
Posted - 04/20/2022 :  08:16:25  Show Profile  Reply with Quote
quote:
Originally posted by KML85

Hi

Im trying to understand how to add my own chip to read the data.
the chips are very similar to say 27C010 but with a few pins in other locations and also thc ROM is just 28pin not 32pin

128KB ROM in 28 pin package

only things that is different is:
OE on the eprom is A16 (pin 24 on eprom) on the ROM and pin 28 on the ROM is VCC (on eprom its NC)

Can someone explain how I can add a custom device for this?
I have read the rom successfully by manualy re-routing the pins with wires

regards


Use the correct device class.
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Reply #2

KML85

Sweden
5 Posts
Posted - 04/20/2022 :  08:26:05  Show Profile  Reply with Quote
quote:
Originally posted by anniel

quote:
Originally posted by KML85

Hi

Im trying to understand how to add my own chip to read the data.
the chips are very similar to say 27C010 but with a few pins in other locations and also thc ROM is just 28pin not 32pin

128KB ROM in 28 pin package

only things that is different is:
OE on the eprom is A16 (pin 24 on eprom) on the ROM and pin 28 on the ROM is VCC (on eprom its NC)

Can someone explain how I can add a custom device for this?
I have read the rom successfully by manualy re-routing the pins with wires

regards


Use the correct device class.


Could you explain how to add a custom chip, your comment is beyond usefull
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Reply #3

anniel

2572 Posts
Posted - 04/20/2022 :  08:30:15  Show Profile  Reply with Quote
quote:
Originally posted by KML85

quote:
Originally posted by anniel

quote:
Originally posted by KML85

Hi

Im trying to understand how to add my own chip to read the data.
the chips are very similar to say 27C010 but with a few pins in other locations and also thc ROM is just 28pin not 32pin

128KB ROM in 28 pin package

only things that is different is:
OE on the eprom is A16 (pin 24 on eprom) on the ROM and pin 28 on the ROM is VCC (on eprom its NC)

Can someone explain how I can add a custom device for this?
I have read the rom successfully by manualy re-routing the pins with wires

regards


Use the correct device class.


Could you explain how to add a custom chip, your comment is beyond usefull
All the details are in the devices.txt, simply read it.
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