The same is just simply there at this point until I do a DRAM IC lib.
I have left one expansion socket in there,Thinking in order to keep costs down, things like flashy clock should be a optional extra. But socket I hope to actually rotate it and put it vertically so the entire bus runs from left to right of the motherboard "via" the 68K socket. to do this I will likely move the shifter to the left and maybe even flip that vertically as well.
I'm going to try and leave the blitter in there, it is still a legacy chip and I think it would be a shame to remove it.. It really depends on space..My aim is to literally cut the board in half just in front of the power supply
The GLUE will be relocated to the right side of the board near the MFP, likely the CPU will end up there as well. This will allow me to have the DRAM and MMU under the power supply and right next to the shifter doing away with those diagonal green traces which run the fairway across the board was actually caused a huge amount of routing problems.
A lot of the mods will be left in place such as the integrated video switch (like UBE adapter) , 1.44 floppy GAL, all the usual DMA fixes etc. While it is a legacy machine, I still want to add on things which people most likely use anyway such as the UBE adapter. It helps to give the board a little bit more value and user-friendliness as well.
I also want to point out that I'll be working on this board behind the scenes and I am really not looking at it being finished for at least 12 months. I really want to take my time with the design of this and get it to a point where I'm happy with it, So might as well make it 24 months
Again because of my RSI work on this will be slow, but I may have to redo parts of it several times to get the best layout anyway. Once done, I will "resize" the motherboard down as much as possible. - Capture.JPG (296.56 KiB) Viewed 5260 times
- 2.JPG (308.61 KiB) Viewed 5252 times
Having space in between the pins makes routing a whole lot easier and neater.