Thanks. I tend to use ? to get help screens, or sometimes, just hit enter.
I don't know the .DSK format, if it's Dave Dunfield's format, then it's not the same, he stores information about the file in the start of the file, the rest is all data. I'm not so sophisticated, the file I'm looking for is ALL DATA, good, bad or ugly. This makes my math a little easier when looking for "sector 0" of the virtual drive (aka file), I just read the first 128 bytes of that file.
Great idea to test some of your other RAM boards. All the old S-100 RAM boards I have were all bad! That set me back 2 months of head scratching until I used one of Andrew's boards to build a new memory board.
Date: Mon, 1 Sep 2014 21:39:26 -0400
Subject: Re: [N8VEM-S100:5129] JAIR 8080 Board- It's alive!
Thanks for answering my questions as I know you are busy getting ready for VCF-MW (along with everyday responsibilities). I am currently using the 8080 board in my test bench setup which consists of an N8VEM S-100 backplane, and an IMSAI front panel. The mask and plexiglass were damaged so I removed them and am using the front panel bare until I restore the machine it is going in. I hope to take some photos tomorrow as you had said a few weeks ago that pictures would be nice.
I wound up using a 2GB Transcend Digital card formatted as FAT16. Thank you for describing the boot process in detail. I may try loading a CP/M image from another source like an emulator since the boot ROM will not load the bios off the disk. One question I can think of is that most the the emulators I have seen use the .DSK format for images while you are using .BIN images. Do you know what the differences are between the 2 formats?
Thanks for providing some syntax for the XMODEM & RAM test commands. I now realize that I should have looked more closely at your monitor listing as it was all described there. I will try to use the XMODEM command to transfer some files and see how I make out. BTW, I do like how you make use of the front panel output port LED's to act at a progress indicator. Now I can also use the RAM test to test some external boards I have by disabling blocks of onboard memory and addressing the external boards in that address space.. Great! Thanks for all your help!
On 9/1/2014 7:42 PM, Crusty OMO wrote:
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