8-Bit Software Online Conversion

                        To: 999 (all members) From: K6N (Brian Raw) Subject: Parallel data transfer Program Name: Emulate. Screen Adaptor Here is another User Port project. Simply, if you can get the User Port to behave as if it were a printer, then you can transfer text from any computer equipped with a parallel printer port to the Beeb. The advantage being that there is no communication protocol associated with serial data transfer to worry about. The program first opens a named file, then the text is read from the User Port and sent to the screen which is also being recorded in the file. When all the data is passed, pressing ESCAPE on the Beeb closes the file. Basic programs may be transported in this way, but may need some syntax changes in a word processor before attempting to EXEC and RUN it. You need to build the adaptor which can either have a centronics socket into which you can plug the normal printer lead, or you can connect direct to the source computer. In either case it is necessary to adapt to a 10 pin DIL socket for the User Port. Adaptor diagram ---------------  N/C   O X O O O O O O O N/C   O X O O O O O O O N/C   O X O O O O O O O ACK   O X O O O O O O O bit 7    bit 7  O X O O O O X O  bit 6   bit 6  O X O O O O X O  0v bit 5   bit 5  O X O O O O X O  0v bit 4   bit 4  O X O O O O X O  0v bit 3   bit 3  O X O O O O X O  0v bit 2   bit 2  O X O O O O X O  0v bit 1   bit 1  O X O O O O X O  0v bit 0   bit 0  O X O O O O X O  0v STROBE    CB2  O X O O X O O X O  5v   CB1 O O O O O O O X O  5v Centronics User Port Side Side Track direction is across the screen. N/C not connected X indicates cut track. Both grounds need to be connected together to provide a common reference Function -------- 8 bit data comes in the centronics side. Then the strobe pulse is sent which causes a CB1 interrupt. No more data will be sent until a low ACK pulse is received by the host computer. DATA  IN STROBE  IN ACK  OUT  EDITOR.......... The idea behind this article is that you get out your soldering iron and "have a go". However, Brian has volunteered to make up these leads for people that would dearly love to transfer data in this method but cannot solder to save their lives. £7 will secure your very own lead. Write to B.Raw, 5 Victor St, Thornbury, Bradford, W.Yorks. BD3 8NG    By J.de B.Pollard Submitted By J.Sargent Info by C.J.Richardson This program came with no info. I have sussed out enough of the program to get you started. Sent to me as a three pass disassembler the title actually says Two pass. When run, the menu offers 9 options. If you follow these instructions, you will get an idea of how the program works. Select option 2, "Select another area of memory". Answer the question "File or memory" with F for file. Answer the question "Input file name" with "Disp". Then press RETURN 3 times as the program asks you for the start, finish and entry addresses. At this point, you would need to press option 5, "trace from an entry point" to select points to disassemble from. I have however saved a trace map using option 4 for you. Load this trace map using option 3. So press 3 to load the trace map for our example file disp. The program suggests a name, this name is correct, this is the name of the trace map I have saved for you. Press RETURN. We are now ready to disassemble the code. Select option 9 from the menu. The screen fills with the disassembly. There are other options to print out, spool and put page mode on also. As so many manuals say, "Explaining how to understand the output of the disassembler is beyond the scope of this info article". Anyone care to take up the challenge?  To: 999 (all members) From: 3WU (Fred Price) Subject: Poems & Centering In the past I have asked if anyone knew of any VDU statement that would center a poem on printout as some poems look better centered up. Not all printers can be centered like mine can & after checking my printers handbook a bit closer I found one in in the LQ-850 commands. It has its faults but it will center a poem. I started to play about with the commands & got it to work as a VDU statement BUT it will only work for me in conjunction with the double height VDU single line statement. On the first line it prints it adds two spurious letters in front of the first word. First the letter ( a ) then on the following printouts the letters ( aE ) appear on the line. To get rid of it on the first line I added a dummy first line to absorb it & gave it three spare lines for cutoff. But I am still left with one more little problem as it will not cancel the centering statement. So if anyone can improve the statement please let me know how you do it. One of the unfortunate things about living on the River WEAR is that we among many things get called Geordies. Now for those that don't know, Geordies belong to the Tyne and we have an accent of our own its called ENGLISH. (Even our editor didn't know that), When I get any local poems they are usually in the Geordie dialect for those that live to the north of the River WEAR as we do understand their way of talking & that's good for us Wearsiders. But would you understand the poems if I left them in the raw Geordie accent for you & I could lay out a Tyneside - Northumberland list of meanings for you so you can perhaps learn their dark hidden secrets. By the way, them that live north of the Tyne, they are harder to understand but we all get on together Thank God, Right down to the nitty gritty. In the past I have sent some poems in of that fictional chap called GEORDIE BROON (Brown) of Backworth. Backworth does exist in Newcastle. Our Geordie is married & he has got a family. This one is about his son Tommy, so put the paper in the printer & don't center up and read about Tommy Brown in: -=- TOMSRUN -=-     