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PROGRAMMING AIDS
Auto x - Does your line numbering by the increment
that you choose
Renumber x,,y - Tells the computer to renumber line y in
increments of 10
Delete x-y - letes the range between x and y
Help - Finds sytax errors (not logic errors)
Trap x - Tells the computer to go to line x on an
error condition
Tron/Troff - Starts and stops the tracing of your logic
Fast - Blanks screen and makes programs run in faster mode
Slow - The return to the computer natural mode
FUNCTION KEYS
F1 - Graphic
F2 - Dload"
F3 - Directory
F4 - Scnclr
F5 - Dsave"
F6 - Run
F7 - List
F8 - Machine language monitor
If you're like most owners of the Commodore 1520 Plotter/Printer, you're probably having trouble locating replacement items such as roll paper and pens. Well, not to worry. Good ol' Radio Shack comes to the rescue again.
The paper is available in a box of three rolls that are 4 and 1/2 inches (114mm) in width and 2 and 3/4 inches (70mm)in diameter. It is 15 lb. register bond and has 145-150 feet per roll. The 1520 manual states that the maximum roll diameter can only be 50mm, so you might have to remove a few layers to use it. However, the early 1520's had a different arrangement of holding the paper than did the newer 1520's. Perhaps the earlier models can use 70mm in diameter. Nevertheless, the Radio Shack P/N is 260-1428 and the selling price is $4.95 for the three rolls. Compare that to the price of $14.95 from Commodore (with much smaller roll diameters).
The pens are also available, either in groups of three of black pens or one each of red, blue and green. The pens are not exact matches with those of Commodore; they're actually better. The pens are much easier to identify by color and they write a lot smoother. T P/N for the black pens is 260-1480 and the P/N for the colors is 260-1481. Each set is priced at $2.95 for the three. Again, compare this to the Commodore price of $10 for a set of four plus $3 shipping and handling.
Hope this is of help to you 1520 owners. Remember, we've got to stick together because we are definetly in the minority. Those 1520 non-owners don't know what they're missing!
t2
1571 NOTES
==========
COMMAND FUNCTION
------- --------
U0>M0 1541 mode
U0>M1 1571 mode
Fast bus
1328 blocks free
Side a: tracks 1-35
Side b: tracks 36-70
U0>H0 1541 mode
U0>H1 Select which head to
use.
Side a: tracks 1-35
Side b: tracks 1-35
Treat each side as a
different disk.
"U0>R"+chr$(10) Disable head bumping.
"U0>"+chr$(x) Set device number 8-11
x = 8 -> 11.
Or use dip switches at
rear of drive.
COMMAND FORMAT
10 open15,8,15:print#15,"u0>m1"
15 close15
20 open15,8,15:print#15,"u0>"+chr$(9)
25 close15
C128 in 64 mode
With Vic-Tree: SEND"u0>m1
With DOS 5.1: @0:u0>m1
With SYSRES: @"u0>m1"
=======================================
Jesse Knight
Brazoria, Texas
Earl Hamner/FUNHUG/21 Oct 85
#: 16193 S9/Peripherals
30-Aug-88 21:44:00
Sb: #1581 sub directories
Fm: Miklos Garamszeghy 72060,1153
To: Gary Farmaner 76703,3050 (X)
The i0 command on the 1581 can be disabled by the following:
"m-w"chr$(152)chr$(1)chr$(2)chr$(123)chr$(128)
All 1581 internal commands are sent through indirect vectors in RAM starting
at $0190. The vector for the i0 command is at m@198
this normally points to the code at 8ec5. The above program changes
this vector to point to an rts instruction at 807b. This effectively
kills the command and allows you to use the partition. Note that the
partition is not retained when you change disks (the init routine for