test-drb January 2012

test-drb@ccmp.vtda.org

201 participants
274 discussions

by chrism3667＠yahoo.com

I'll have to rebox them as smaller parcels. I can't lift anything near that right now (or anytime soon). If you're still interested (those that previously responded), let me know. Media rate from 08005. Figure 2-3 boxes @ 25 or 15 lbs. each. If that suits you, they're yours. It'll probably take me another week or a bit more to get all that done though. I'll need a check for shippage. If you send me more (owing to my possibly exuberant estimates), I'll refund the difference, so no need to ruffle your punch cards. Let me know.

12 years, 11 months

Looking for 8080/Z80 BASIC

by derschjo＠mail.msu.edu

Anyone have any recommendations for a reasonably featured 8080 or Z80 BASIC? What I've got running at the moment is a mongrel IMSAI 8080 with a Z80, 48K of working memory and a serial port. My eventual goal is to get CP/M running on it (I have a Cromemco 64FDC -- anyone know of either an official CP/M for this or know of a BIOS that supports this controller before I start writing my own?) but for the time being I thought it would be fun to get a BASIC running on it. The catch is I need something I can adapt to the serial I/O on the Cromemco controller -- so something that I can pretty easily modify is of course preferable. (I'm not opposed to manually hacking up a binary but having an official source listing to start with would save time :)) I started looking at the IMSAI 8K basic listing but there's a fair amount of hardware-specific I/O code in it scattered throughout so I'm not thrilled about modifying it... (and the only source listing I can find is in a PDF, which doesn't help any...) Thanks, Josh

12 years, 11 months

Looking for 8080/Z80 BASIC

by Arno_1983＠gmx.de

> One of the things that frustrates me with C21 OSs and languages is > that the graphics facilities of machines are locked away behind the > high walls of libraries and APIs designed for professional developers > - which are simply too hard for an interested amateur such as myself. Are you aware of FreeBASIC (the one with the nice horsy logo) and had a look whether that floats your boat? This is an extendable freeware BASIC programming environment for Windoze (I dunno if it's available for other platforms too, I don't care at the moment) which can be enabled to do sound, Windows GUI widgets, networking primitives and the like via downloadable modules/libraries, which should be well documented and examples provided. I located and installed it a few years ago as a win- and TCP-enabled replacement for Turbo BASIC, both for my usual day-to-day diddling and intending to program a control application/"driver" for some not-quite-xterm, but couldn't scrounge up the spare time for more than a very cursory examination 'til now. Arno Kletzander ...sent from my HTC Magician PDA

12 years, 11 months

Guy claims to have re-badged VIC-1001

by christian_liendo＠yahoo.com

Ebay Item 320822744546 http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=320822744546 His title "VERY RARE: This Commodore VIC-20 is a Re-badged VIC-1001. Made In Japan." Am I crazy or wasn't all the VICs made in Japan??

12 years, 11 months

22disk & CP/M's diskettes

by elazzerini＠interfree.it

Hi all, after i finally resurrected my BIGBOARD and I made ??the boot of the operating system CP/M, are struggling with reading old diskettes. Before i comes out completely my mind in the counting of all parameters to pass to the program 22disk, someone knows a comprehensive guide on how to decode the disc formats? I am very close to the identification of parameters, but frankly it is extremely stressful. I'll try to list where I am keeping in mind that the format Bigboard 1 has 77 tracks x 26 sectors / track each with 128byte single-density single-sided. 1) almost every disk CP/M in the first 2 tracks the format is 77 tracks x 26 sectors / track each from 128byte. 2) then starts the data portion that would be double-sided and i need to remove from this portion the sectors used for the FAT whose number is to be calculated as a function of the total number of sectors to be managed; 3) i'm able to reconstruct the sequence of sectors on the disk for the first 2 tracks with the CP/M and for the remain data area; 4) then takes over a parameter which is the allocation unit size that means how fields are grouped together to determine the parameters DRM 5) the allocation unit size determines all the other parameters BSH, BLM, DSM 6) Finally, AL0 and AL0 that the 22disk's document did not clarify well to me. SO: that it is a bit hard for me... Is out there anyone who can help me? Excuse for my poor english. Enrico -Pisa - Italy

12 years, 11 months

Oscilloscope vector display driver...

by rmu_scada＠yahoo.com

http://www.jmargolin.com/vgens/vgens.htm

12 years, 11 months

teaching programming to kids - Re: Looking for 8080/Z80 BASIC

by vintagecoder＠aol.com

Depends who you ask. I was told by a guy with 3 years of Java programming under his belt that Java is much more powerful than assembler, after all, Java is object oriented! ;-) Anyway this ought to be an interesting subthread. I'll make the popcorn! ------Original Message------ From: Chuck Guzis Sender: cctalk-bounces at classiccmp.org To: General Discussion: On-Topic and Off-Topic Posts ReplyTo: General Discussion: On-Topic and Off-Topic Posts Subject: Re: teaching programming to kids - Re: Looking for 8080/Z80 BASIC Sent: 3 Jan 2012 09:53 On 3 Jan 2012 at 2:28, Richard wrote: > It's not really a fair comparison as we expect a "modern" language to > do much more than FORTRAN 66. Do what, exactly? Are you saying that simple languages can't "do" what more complicated ones do? Does the simplest---machine code, do less than, any HLL, modern or ancient? Is C less capable than Python? --Chuck

12 years, 11 months

Cromemco FDC (was: Looking for 8080/Z80 BASIC)

by dm561＠torfree.net

Date: Sat, 31 Dec 2011 10:02:11 -0800 (PST) From: Jerry Wright <g-wright at att.net> Subject: Re: Looking for 8080/Z80 BASIC > Josh, I would love to get your 64FDC for my Cromemco 68020 machine that > is missing one. I have 16 FDC and other Croemeco Z-80 Boards to go along > with it. Which model 68020 Cromemco is it? I might be able to find a spare 64FDC... mike

12 years, 11 months

Connect Shugart SA850 to PC

by shadoooo＠gmail.com

Hello. I have a Shugart SA850 I would connect to a PC, to read/write old diskettes using linux. I would need a suggestion on how to do connections and specially how to set the jumpers on the driver. Any advice? Andrea

12 years, 11 months

Imperative thought patterns - Re: teaching programming to kids - Re: Looking for 8080/Z80 BASIC

by dm561＠torfree.net

----- Original Message: Date: Tue, 03 Jan 2012 08:33:02 -0500 From: Toby Thain <toby at telegraphics.com.au> Subject: Imperative thought patterns - Re: teaching programming to kids - Re: Looking for 8080/Z80 BASIC > On 1/2/12 8:22 PM, "Josh Dersch"<derschjo at mail.msu.edu> wrote: >>>> Djikstra said, "It is virtually impossible to teach good programming >>>> prctices to students with a prior exposure to BASIC; they are mentally >>>> mutilated beyond any hope of regeneration." >>> >>> He had that lovely combination of clear sight and fearless expression. >> >> If only that particular expression of his was even remotely true :). >> >> - Josh > Most long-time imperative programmers who seriously studies The Structure > and Interpretation of Computer Programs will come face to face with the > essential truth of Dijkstra's remark. The consequent un-learning is just > as valuable as the learning... --T ----- Reply: I don't think Josh was questioning whether Dijkstra said it, but whether it's actually *true*; since you (Toby) say elsewhere that "I too learned with assembler, BASIC, Pascal, C, and so on", then you must also be "mentally mutilated beyond any hope of regeneration". That would of course explain a lot... ;-) I think many if not most of the people on here discovered that they enjoyed and had a gift for programming by playing with BASIC on their C64 or equivalent and, far from being "mentally mutilated", have gone on to be quite competent programmers and/or analysts; I also suspect that had that C64 been equipped with a language that discouraged 'playing' and enforced rigid rules of structure etc., many of those folks would today be in a different and perhaps less satisfying career. m

12 years, 11 months

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test-drb January 2012