[sdiy] working with EPROMs

[Ingo Debus]

Am 12.11.2010 um 00:27 schrieb mark verbos:

> I've been looking at some 70s delay schematics that use EPROMs to  
> create all of their timing signals for the converters and rams and  
> everything and it makes me wonder how you create the data for  
> those. I have a burner, but the only way I know of to create the  
> binary files is with the Wiard/Darwin Grosse WAVE256 application. I  
> mean, if I made some graph paper with 256 lines each way I could  
> draw the timing that I want and then enter it line by line into  
> WAVE256 in the "Numeric" section, but there has to be a better way.  
> My googling has not gotten me anywhere. Does anyone have any  
> suggestions?

How about using a spreadsheet program (like Excel)? First column is  
EPROM address, then eight (or how many you need) columns for the data  
bits. You fill these with 1s and 0s as needed. Then have another  
column where you concatenate the data bits to bytes and eventually  
convert them to hex format. With a little more Excel-Fu from there  
you can create an Intel hex file or whatever format you need fpr your  
EPROM programmer.

Ingo