1145_proms.zip

[Activmaker]

Hi,

I found on bitsavers the file 1145_proms.zip . I think that this file contains ROM microcode files. Indeed, I found inside , 16 Hex files conresponding to the 16 chips (256*4). The question is how to know wich file is correponding to wich bits . For Exemple what is file containing the 4 low bits 0:3 ? And of course the other ones .

Thanks.

 

[Roland Huisman]

It seems the chip location numbers are in the file names... So check the schematics for details.

Regards, Roland

 

[daver2]

I agree - the initial text of the filename (e.g. E89, E90, E91, ...) is the ROM associated with the specific device on the 11/45 schematic.

See document http://www.bitsavers.org/pdf/dec/pd...Processor_Unit_Engineering_Drawings_Apr76.pdf PDF page 59/122 for ROMs E89 to E91.

Having developed a LOGISIM simulation of the 11/45 microcode - I know this well...

Dave

 

[Activmaker]

I confirm, I need to check my eyes , i didn't see that ..Thanks , daver2 so, you have a .circ file ? is it public on github ?

 

[daver2]

It'll be on my Google drive if I did upload it. I will check later and upload if not.

I will also post a link to it - that may be useful!

I didn't quite complete the full implementation of the 11/45 though - I seem to remember that I competed everything apart from the 'simple' gate logic (e.g. instruction decode logic etc.). I'll refresh my memory...

Dave