Finally, the DIO model 288 talks to the VAX. This programmer has 8 32 pin
sockets so it can program 1 megabit EPROMS. It has 512k of ram (same as the
IMI). It appears to be somewhat slower than the IMI but it is no doubt
faster than waiting in a line for the IMI. 

Unlike the DIO model 29A, this programmer has an automatic family/pin
code selection mechanism that actually works. There's even a way for the
VAX to find out the real F/P code after it automatically figures one out.
So, it is no longer necessary to specify a DEVICE command to the DIO
procedure if you are programming devices larger than 27128's. The VAX
will force an auto f/p select and report the other manufacturers parts
that may be interchanged with the ones you are programming.

Until I get a switch box built up, you can switch between the 29A and the
288 by unplugging and replugging the RJ11 connector (telephone type) from
the light blue (29A) and dark blue (288) DB25 connectors lying behind the
two units.

If you need to upload a set of EPROMS but want the data to appear in the
uploaded file as though it were 16 or 32 bit words, you can do that with the
/WORD=nn option on the UPLOAD command. I think you will also have to specify
the whole range too. For example, if you want to upload 4 27256's into a
file as 16 bit data:

	DIO> UPLOAD your_file_name 0-1FFFF/WORD=16

Both the 288 and the 29A (with the GANGPAK) will do this.

ds

I forgot to mention how to enable the DIO 288 for VAX access. The message
COMPUTER CONTROL should appear on the top line of the LCD display. If it
doesn't, then press one of the arrow keys repeatedly until the message
RS232 PORT shows up on the top line of the display. (If pressing the arrow
keys doesn't change the top line of the display, then press any of the
number keys until the 288 beeps, then try again with the arrow keys. I.e.
bang any or all the buttons until the DIO cries for you to stop.)

After you get the RS232 PORT message, press ENTER twice. After the first
ENTER, the message COMPUTER CONTROL will appear in the lower window (if not,
press the arrow keys until it does) and after the second ENTER that message
will replace the RS232 PORT message.

ds