Marvin wrote: ===== Transferring from the N* to the PC ====== I developed a process for capturing the entire disk so would have a backup of each my N* disks on the PC. I figured that later I could use the data to create a disk image and then extract the files from that disk image. The procedure is basically reading sections of the disk into a buffer using N* DOS and then listing that buffer to a PC log file using N* monitor. Here is the procedure. The comments below are not part of the procedure and they are not captured in the file. They are just added to clarify the procedure. // Step 1 - While booted into N* DOS, turn logging // on in my terminal program (PROCOMM) // Step 2 - I type in the LI command to list the files // on this disk. This documents which files, and where // they are on the disk +LI DOS 4 12 D 1 2000 BASIC 10 52 D 1 2D00 MAILER 36 30 D 2 LIST 51 500 D 3 CF 301 6 D 1 2D00 SID 304 48 D 1 9000 MONITOR 328 8 D 1 0 CD 332 4 D 1 2D00 // Step 3 - I have determined that I can read 144 blocks // at address 3000H without overwriting DOS or the monitor. // So I read 144 blocks starting from block 0 on the disk. +RD 0 3000 144 // Step 4 - I load and run the N* MONITOR which happens to // be on this disk. If it was not on this disk I would have // temporarly swap disks, load the MONITOR and swapped back. +GO MONITOR // The N* MONITOR starts MONITOR 5.0 // Step 5 - I use the MONITOR command to dump the 144 256 // byte blocks to the terminal. 3000 44 4F 53 20 20 20 20 20 04 00 06 00 81 00 20 20 D O S - 3010 42 41 53 49 43 20 20 20 0A 00 1A 00 81 00 2D 20 B A S I C - - 3020 4D 41 49 4C 45 52 20 20 24 00 0F 00 82 1A 20 20 M A I L E R $ - // ---- BIG SNIP HERE to shorten this email ----- BFE0 20 03 8B 47 45 4E 45 56 41 20 52 4F 43 4B 20 50 - G E N E V A R O C K P BFF0 52 4F 44 2E 20 20 20 20 20 20 20 20 20 20 20 20 R O D . C000 A3 -# // Step 5 - I return to N* DOS with the OS command // Next step - I read the next 144 blocks. This is a // double density disk and each sector is 512 bytes // contains 2 blocks, so the next read is from 'disk // address 72. +RD 72 3000 144 // Back to the MONITOR, repeating the 5 steps until // the entire disk is read. The only command that // changes each time is the RD command. +GO MONITOR // The other read commands are: +RD 144 3000 144 +RD 216 3000 144 +RD 288 3000 124 // There are 35 tracks, 10 sectors, 2 blocks per // sector, making 700 blocks of 256 bytes each // for a double density disk. So the last read // is just 124 blocks. // Of course the last step is to close the log file. ===== Transferring from the PC to the N* ====== I have done this. But I would just suggest that you write a N* BASIC program that first prompts for a filename and creates the file. Then the program would wait for data from the PC which it would store in a buffer before writting the data to disk. I would suggest sending the data as ascii encoded hex. --Doug ========================================= Doug Coward @ home in Poulsbo, WA Analog Computer Online Museum and History Center http://dcoward.best.vwh.net/analog =========================================