osiweb.org

I try to load programs over the RS-232 in the Superboard II from PC at 1200 Baud over Hyperterminal. It works good, when i instruct the Hyperterminal on PC to wait after every cariage return 100ms. That is why the scrolling one more line in the OSI display needs some time, when you send in this time...

I make a schematic for the RAM upgrade.
Also there is a combined BASIC-ROM file that fits in the 27C64.
If there are any questions, ask me.

Frank

Hi Steve, it is written in dutch. Dutch is partial similar to german, but in many cases strong to read for me. The link below is written in english and descibes the VDU-card for the system with patches for OSI-DOS. http://retro.hansotten.nl/uploads/eljunior/ukvducard.pdf Yes, i readout the special m...

Hi Steve, i will document it in the next week. Yes, i have connected a floppy drive. in 1982-1985 the "Elektor" Magazin published a OSI-compatible floppyinterface. http://retro.hansotten.nl/uploads/eljunior/eljunior82.pdf With an adaptercable you can connect it as it is to the expansionconnector of ...

After 30 years i pulled out the 600 board and it works. Only just 8KB RAM is not enough for loading OS-65D. To free some sockets for RAM i combine the four Basic-ROMs to one 27C64-150. Three free sockets are now available. In one i took a 62256-80 RAM and bend the not fitting pins up. Only a 74LS32 ...

Hi Steve,
you don't need the 8T28, when you have no 610 board connected.

Frank