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Thanks FvM
Yes, I’ve used some logic to set the Eprom using the chip enable on the EPROMs to set a memory map as you indicate
I’m using the A15 line so that the EPROM is only addressable from 8000 to FFFF
As you indicate this is basic design stuff and documented well
It does mean I’m doing this...
Ok
thank you very much
that makes sense. I saw that the instruction pointer on the 8086 moves in twos. So it starts at FFFF0 then FFFF2 then FFFF4
so my assumption was this is because it’s reading 2 bytes of data at a time
So for my 27C512 eprom that has 16 address lines and 8 data lines
With...
Thanks FvM
i really really appreciate the response. I’ve confused myself I think
yes, I see what you say BUT ?
and this is why I posted on here to get advice
My thoughts were exactly that
i created a binary file and then split it into low and high bytes
i then uploaded the low bytes to eprom 1...
Thanks so much Klaus,
Why 8086 ? - because back in 1983 I was a programmer for marconi radar systems . I wrote the air traffic control software for Marconi using assembler and it was used for all the UK air traffic controllers. The hardware guys built the computer using an 8086 then gave me the...
Hi Brian
Yes, that’s it exactly. Both EPROMs have identical machine code loaded. Both EPROMs are connected to the 16 address output of the address latch a0 to a15. Eprom 1 is connected to data lines d0 to d7 and eprom 2 is connected to data lines d8 to d15. So yes the idea is the 8086 reads 16...
I’m trying to connect an eprom containino 3 simple lines of machine code as a test. The code is mov ax, 45
add ax, 7
mov [6000], ax
I have two 8 bit 512 eproms, as the 8086 reads 16 bits of data and eproms have 16 address lines and 8 data lines
The 16 address lines connect to both eproms a0 to...
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