I need a schematic diagram of a Rockwell Aim65 computer. Anyone who can help me? Please !

I have a complete, though worn schematic. I plan to scan it as soon as I get time. I can then send you a copy, or put it somewhere for you to download. I'll post back herw when I get it scanned, may ba a ...

I use cc65 ( http://www.cc65.org/ ). But, I've never used the C compiler (I don't know how to, honestly heheh), only the assembler and linker. I like being able to use the segments and linker config, being able to reserve bytes of RAM/ROM right next to the code that uses it, stuff like that ...

I think I understand what's being asked here... for two processors or subsystems to share the same RAM.

Turning the way back machine, way, way back I once used a 6809 card which ran in a an Apple II. As I remember they both used the same memory, in fact that was how one would transfer data between ...

I seem to be responding to my own posts to report what's happening. Oh, well. Anyway, I have solved the final (maybe, I think) problem. I needed to convert the object output from cc65 to Mos Technology paper tape format text files. I found a super open source program called SRecord, available at ...

I am finally makikng some headway. I am now starting to gain a limited understanding of cc65 and how to use it. I have a few minor things to do, and one MAJOR thing.

Since I can communicate between my Mac and AIM 65 via the serial port, I can now use a terminal program on the Mac as a control point ...

Thanks for the info, but you might want to review it.

My KIM user manual and my AIM 65 manual both say that the last record has 00 for byte count as is shown in this record.

;180000FFEEDDCCBBAA0099887766554433221122334455667788990AFC
;0000010001

You must have made a typo (I do it all the time ...

I just wanted to update status on my project. I now have cc65 installed on my Mac. I found a way to add info the the compiler to include a type for AIM (not done yet, but at least I know where to start).

I got serial communication working between my Mac and the AIM, my post in the Hardware section ...

This was a case of several errors on my part that stacked up. I managed to get some useful info from a fellow AIM user from the Classic Computer list.

Escentially I had two problems:

1. When I used the MAX232 I didn't notice that thew signal was inverted at the output....Fixed by adding an ...

Well, I built a 20 mil (really TTL) to RS-232 adapter for my AIM.

I used a MAX232, and connected it according to the app note, which recommends using 1uf caps in the voltage doubler circuit.

I connected pin U on the 44 pin edge connector (TTY out) to pin 11 on the MAX232, and pin 14 to Rxd on the ...

Thanks Tony!! My AIM 65 lives again!

Wow! I had it in the box for 20 years, took it out and it didn't work..

Here's what was wrong..

Address line conflicts -- found with NOP generator (thanks Lee) and logic probe.

5 of 8 2114 RAM bad -- Tony found with RAM test.
Bad CPU -- Tony found by swapping ...

Just got done with more checks. I put th NOP generator back in, checked all address lines everywhere, OK, phase 2 to everywhere OK, RESET to everywhere OK, All chip selects on ROM, RAM, VIA, RIOT, PIA and CPU, all OK.

Put minimum system back together, Display, ROM, and first 1K RAM, no joy.

Any ...

Good idea, I did not check all the CE and OE, just some I'll check the rest with the NOP generator in use.

The RESET appears to be resetting properly, at least the RESET signal is getting to the processor, and the address lines look like they are interrupted when RESET is applied, so I think RESET ...

Well, AIM 65 still not working. :( :( Bummer.

Thanks for all the help and encouragement.

I used the NOP generator (Thanks Lee) to trace down problems with the Address lines. I was able to get all the address lines working by using the vacuum and and paint brush to get whatever was causing the ...

Well, I think I am getting somewhere. I put together a NOP generator to troubleshoot the AIM 65 and it really helps... I removed the ROM, RAM, VIA and RIOT and I turned it on and started probing around with a logic probe. On the CPU all the address ines change state as would be expected. ON the ROM ...

Thanks Lee, I will try it tomorrow and report the results.

AndyD