I changed some jumpers;
On the CPU board: JP10 2nd from left. On the Prop I/O board: set P74 bit one & P75 bit two. Now when I boot, I no longer get a runaway on the display. I do however get treated with the prompt; > five dots two spaces five dots..... Keyboard has no effect. <https://lh6.googleusercontent.com/-pxAmpfcx9_o/VOKxndLmxRI/AAAAAAAAABA/Rxi2ePq0QZg/s1600/my%2Bdots.jpg> I did see this in another post of Jeff Albrecht; <https://lh5.googleusercontent.com/-tKQtLuHkUpA/VNYVUt4cUxI/AAAAAAAAA4k/adIPIFrNlfY/s1600/IMG_1808.JPG> I see his screen has a prompt > with 5/dots + the BOOT BIOS.HEX, INIT_FAT. For those that have a working board, what is the normal mode of operation in this boot sequence ? On Monday, February 16, 2015 at 1:45:14 PM UTC-6, Todd Miller wrote: > > Booting up Crusty's 8080 CPU board with ver 1 of > the Prop I/O card. The Boot loader flys off the screen > like a key is being held down. I can see the message; > > Altair/Imsai <banner> > > <D> Directory > <R> Ram Test > <V> View Load > > > > > First few boots I missed it, too busy looking > at the SMB, but then caught it out the corner > of my eye. Rebooted and stopped the CPU after > I saw the menu. > > I'm guessing I don't have the Prop I/O set up > for the correct "status bits" for KEYBOARD > in/out. I recall dealing with this to match > it up to my ver Dos. > > What should it be set to ? > > > JP8/JP9 all jumpered > JP10 no jumpers, don't understand... > -- You received this message because you are subscribed to the Google Groups "N8VEM-S100" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
