how to put 48K 7800 binary on 64K EPROM

[Yurkie]

Could someone please help me get this to work?

[Shawn]

put this 16k of junk data at the START of the binary after you have signed the 48k worth of code.

 

 
copy /b junk16k.bin + 48k.bin 48kwjunk.bin

junk16k.bin

Edited June 8, 2012 by Shawn Sr.

[Yurkie]

I don't think my GQ-4x programmer software has the option to do that.

[+Mitch]

Do you have a hex editor? I use ultraedit32 myself. WIth a hex editor open the bin file and insert the desired amount of blank space.

If you want to use Shawn's method you can just paste his 16k blank file to the front of your bin file.

You should be able to do this from the Windows command line as well. Something like: copy junk16k.bin+48kgame.bin 64kgame.bin

I beleive that's the correct syntax, it's been a while. Obviously substitute your own game file name for the 48kgame file name.

 

Mitch

[jwierer]

I don't think my GQ-4x programmer software has the option to do that.

You just do what Shawn suggested from a Windows commandline.

 

-Jeff

[Yurkie]

I made the 64k binary successfully, however a 64k EPROM won't work on a 48k cpuwiz board will it?

[CPUWIZ]

Yes, it is made for 27C512's.

[Yurkie]

so will a 27512 work in place of a 27c512?

[Yurkie]

I think maybe the EPROM is incompatible. Here is a pic of the board.

[Yurkie]

Here is a board with nothing on it. I say 74LS02.

[PacManPlus]

so will a 27512 work in place of a 27c512?

 

Yes

[CPUWIZ]

Dude, you have a 74LS21 in there, not a 7402/74LS02/74HCT02.

[Yurkie]

Fu%&ers at Jameco sent me a non-compatible substitution I guess.

 

I was a dummy and ordered the wrong thing by mistake.

Edited June 9, 2012 by Yurkie

[CPUWIZ]

 

74LS21:

 

That chip doesn't even remotely do what the 74LS02 quad 2-input NOR gate does. I am shocked Jameco would do something like that. I should have just sent you a few of the 74LS02's with the PCB's. Sorry.

[Yurkie]

Turns out it was my bad. I ordered the wrong part by mistake. I looked in my order history. I love Jameco. I just placed an order for 25 74LS02s Now I need to buy some more of your high quality boards! Fantastic board quality!

[Yurkie]

Damn it is a bummer to spend hours messing with something, only to realize one was an idiot and is using an incorrect component.

[CPUWIZ]

Yeah, Jameco is awesome for older parts, I used to live very close to them and could actually just go to their warehouse store-front. That is why I was saying I was surprised, they know their sh*t, if you know what I mean? Glad you like the boards.

[Yurkie]

Yeah Jameco is fantastic. I would be always broke hoarding components if I lived down the street from Jameco.

[Yurkie]

You ever visit Brad at Best CPUWIZ?

[CPUWIZ]

You ever visit Brad at Best CPUWIZ?

 

Stupidly, never did.