So how to go about dealing with the memory mapping if I were to layout an 8bit card for the 65C265, so the memory over the first megabyte of bus address space can be used without replication or interference from peripherals overlapping.

-Justin

I'm curious - are you using something like a ...

Gordon

yes I have a 16 bit ISA passive backplain, yes sound cards and the like are one of the existing perhiperal cards I'd like to be able to communicate with. now that I'm taken a closer look at the 65c265 it seems like it would solve many interfacing issues HOWEVER employing some GAL chips seems ...

I am aware now!

So I've been pondering how to go about wiring up an ISA card for a 65c816 CPU card for use on the ISA bus. I'd like to make use of the entire 24 bit address range and a latch for the higher data bits. My question is how to get an accurate spec to work with for the bus so I can determine how best to ...

VME bus chassis are based on the euro card format, while a poor example I have a 3 card version of this style chassis I paid $50 for about 10 years ago. https://www.ebay.com/itm/Elma-32VS-VME-Bus-Chassis-W-Card/184017416779

the bonus to using this type of VME bus is that it's already setup for the ...

something I've been considering is the use of 72 pin SIMM sockets used for DRAM years ago, the sockets are still readily available for reasonable cost. in my specific case I am interested in the ability to easily change out processor types connected to my FPGA project. the other thing I am keeping ...

something I've been considering is the use of 72 pin SIMM sockets used for DRAM years ago, the sockets are still readily available for reasonable cost. in my specific case I am interested in the ability to easily change out processor types connected to my FPGA project. the other thing I am keeping ...

I'm near the Philadelphia Expo center and am interested in a ride share to get to the show on Friday for the talks, I've been many times but never was able to get there in time for the workshops or talks.

1) if the connectors can still be sourced I will suggest the board mounted connector used for the Atari 7800 game console, memory serves it has everything needed to interface RAM/ROM to a 6502, including some additional IO pins for audio and system clock.

2) IMHO the 16 bit IBM PC AT connector ...

Well, the bridging comment was strictly a historical recap. I'm not looking to implement anything on older (vintage) 6502 machines.

I also noted that a standalone filesystem, e.g., intelligent storage subsystem, would be preferred. In this case, you could write a command processor for any system ...

It would certainly be good to see SDRAM, or DDR{,2,3} running sweetly on a retro project. In fact I think SDRAM has been done - but the access time is quite lumpy, IIRC. These technologies are at their best doing cache-line refills, not random byte access. But in any case, they should work.

yes I ...

I went with DDR3 in preference to older technologies such as classic SRAM due to it's abundant availability, with such abundance affords in memory software projects that were once unimaginable can be realized. bragging rights aside I'd really like to see that classic hardware can do with access to 4 ...

I plan to use the DDR3 for general program memory, going to bootstrap the board by loading the RAM and using it for both RAM/ROM space.

I purchased a Spartan 6 FPGA board to play along with interfacing a 65c816 to some DDR3 memory. here's the link, https://www.aliexpress.com/item/1000006703110.html my interest is in building up a memory manager unit for the 816 along with including the common glue logic needed to multiplex the high ...

indeed well done!

have you implemented the full 24 bit address space?