test-drb December 2006

test-drb@ccmp.vtda.org

225 participants
420 discussions

by grant＠stockly.com

I'm trying to modify my 88-ACR to work with the KCS specification. Does anyone know where the information on modifying the 88-ACR to read/wrote KCS audio is? Also, I was wondering if anyone ever looked at this card? The XR210 chip MITS used for demodulation of the FSK signal is capable of MODULATING too. (with both mark and space frequencies). Does anyone know why they would have used 5 ICs and a few opamps to do the modulation when they could have used the other half of a chip already present? Grant

17 years, 5 months

===== IBM system 34 SSP command ===

by F5INL＠wanadoo.fr

Hi, Does anyone know a way of listing the files of a diskette or a disk drive of a System 34 ? I tried the following SSP commands (normally used on S/36 computer), but it doesn't seem to work ... //LOAD $LABEL //RUN //DISPLAY LABEL-ALL,UNIT-F1 //END After typing these commands, I was expecting something should appear on the CRT but nothing arrived, neither a list of files, nor an error message, even if I had to wait few seconds before the computer returns me the hand... I don't really understand what they mean by the verb DISPLAY in the OCL statement guide. Does it mean DISPLAY on the CRT ? DISPLAY on the PRINTER ? DISPLAY in a file ?... grrrr.... Merry X-mas to all, and thank you for your help. Fred.

17 years, 5 months

Merry Christmas!

by healyzh＠aracnet.com

17 years, 5 months

Looking for HP 10342B Bus Preprocessor Driver disk/files

by maurice.smulders＠gmail.com

Hello, I'm looking for the HP 10342B files to use it on a HP 1652B Analyzer. I did find the documentation online - thanks to bitsavers.org - but am still looking for the software. Is there a place I could obtain the files required? Kind regards, Maurice

17 years, 5 months

Cylinders versus tracks...

by julesrichardsonuk＠yahoo.co.uk

Out of interest, which is the correct terminology when defining a single point on a disk's surface - is it better to talk in terms of cylinders, or tracks? People often seem to talk about floppy drives in terms of tracks, heads and sectors (e.g. for an 80 cylinder floppy with two sides they'll still talk in terms of tracks 1-80 in conjunction with a side number, even though the media has 160 tracks in total) Talking in terms of cylinders seems to be generally the norm with hard disks though, and perhaps seems a bit more sensible - but remember that hard disk manufacturers are the people who introduced decimal megabytes into common use :-) Personally I prefer to talk in terms of 'surface number' rather than 'head number', as a given surface could conceivably have more than one head in order to improve media latency - but I'm unsure as to whether to use cylinder/surface/sector or track/surface/sector. It's all just semantics, but for the stuff I'm currently working on I'd rather go with the 'correct' version even if that happens not to be the one most commonly used... cheers Jules

17 years, 5 months

===== IBM system 34 SSP command ===+

by n8uhn＠yahoo.com

Oh Man, it's been years but, check out the "listlibr" (list library) command. i think it works with floppys but it may be a hard drive command. something like //listlibr dir the dir switch need to be in there somewhere. also i think display is the ocl command for display. the listlibr command uses a switch for the crt or printer too. keep in mind that the crt only displays so many columns you'll have to send the output to the line printer or a printer on the twinax to view the entire line. Bill Message: 30 Date: Sun, 24 Dec 2006 14:21:52 +0100 From: "Frederic BOSSU" <F5INL at wanadoo.fr> Subject: ===== IBM system 34 SSP command === To: <cctalk at classiccmp.org> Hi, Does anyone know a way of listing the files of a diskette or a disk drive of a System 34 ? I tried the following SSP commands (normally used on S/36 computer), but it doesn't seem to work ... //LOAD $LABEL //RUN //DISPLAY LABEL-ALL,UNIT-F1 //END After typing these commands, I was expecting something should appear on the CRT but nothing arrived, neither a list of files, nor an error message, even if I had to wait few seconds before the computer returns me the hand... I don't really understand what they mean by the verb DISPLAY in the OCL statement guide. Does it mean DISPLAY on the CRT ? DISPLAY on the PRINTER ? DISPLAY in a file ?... grrrr.... Merry X-mas to all, and thank you for your help. Fred. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

17 years, 5 months

RSS for new bitsavers files?

by legalize＠xmission.com

Is there an RSS feed that tracks the index by date or something? It would be nice to see what's new as RSS items. -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

17 years, 5 months

FREE Plotter - Last Chance!

by kyrrin＠bluefeathertech.com

This is being sent to the CCTech, Tektronix, HP, and Test gear mailing list. I have available, for PICKUP ONLY in Kent, Washington (about 30 miles southeast of Seattle), a nice HP DraftMaster pen plotter, a couple of packs of paper (sizes C and D), and a boxful of pens. This needs to be MOVED! I need the space far more than I need a plotter. If no one claims it, I will have to dispose of it as best I can, even if this means tearing it apart and recycling its guts. I know that sounds harsh, but I've seriously reached the point to where this unit has to go. Please get back to me by E-mail ASAP. If E-mail should bounce, please call me on (253) 639-2996. This is the LAST time I'll be offering this. I need to hear from whoever wants it in the next day or so, or it's gone. Thanks much. -=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Owner & Head Hardware Heavy, Blue Feather Technologies -- http://www.bluefeathertech.com kyrrin (at) bluefeathertech do/t c=o=m "If Salvador Dali had owned a computer, would it have been equipped with surreal ports?"

17 years, 5 months

help ID this ISA card

by alexeyt＠freeshell.org

I have a 16-bit ISA card labelled "Arnet 30500404 Copyright 1993 Arnet Corp. Made in USA". It has 2 HD-15 female connectors labelled Line1 and Line2, a bunch of discrete logic, 6 PALs and a Hitachi HD64570CP 2-port Serial Communications Adapter chip. A google search tells me only that it might have been an S/570 adapter, but I have no idea what S/570 was (the most common hit seems to be for a scanning electron microscope?) and if I can trust the one parts dealer that seems to have one to know what it actually is :-) Anyone know what this board does? Anyone want it? Alexey

17 years, 5 months

Computer Music

by grant＠stockly.com

>3) A 1970s era microcomputer controlling an analog synthesizer. I have source code and custom interface cards from ARP's project to create the first consumer computer controlled synth. The prototype was built out of an Altair 8800. Never finished, never released. It was a top secret project within the company I will try to scan the entire binder and recover all of the source code off of the 8" disks if it will help your project. Currently I think I am the only person who still has a copy of this information. I got it by accident when I bought ARP's Altair. ;) The binder has been sitting between the two front seats of my car since September. I'll have a good excuse to scan it on the 26th. ; ) This information has been left out of the history books! I'll include a few routines below... NOTE, I tried to recover the assembler written in "Altair Basic", but it is corrupted on the disk. The assembler program appears to have been written in Altair Basic with line numbers and then assembled by a special program. I would appreciate ANY information on this basic assembler! The person who wrote the routines below wrote a thesis at MIT in 1971 about the possibility of a computer-controlled synth. He was using a PDP-15 at the time. I can provide more information, but a good quote about the Altair 8800 Synth "One of my more impressive demos was doing four-part harmony using a woodwind ensemble (flute, oboe, clarinet and bassoon or French horn). Using the pro-soloists on the four-channel Bose system in the small lab sounded very grand. In fact, the lab was under tight security and not ever the VP of marketing was allowed in, though he tried. (We wanted them to sell what they had now, not get musicians waiting for things to come.) " Grant 0000 org 03fdh 0010 jmp presc 0100 org 0040h 0110 ************************************************************** 0120 * 0130 * Module PRESC 0140 * 0150 * Written by Bruce Cichowlas 8/25/76 0160 * Copyright Circle C - ARP Instruments 9/15/76 0170 * 0180 * PRESC - checks the preset panel and sets the previous 0190 * preset reading (prvpr), as well as the preset request 0200 * word (prerq). This routine should be invoked frequently, 0210 * as it actually does the preset panel scanning. 0220 * 0230 * No arguments 0240 * 0250 ************************************************************** 1000 presc equ $ 1010 push b 1020 lda ppadr ;preset panel addr 1030 ora a ;set flags 1040 jz pres1 ;none set 1050 mov b,a 1060 lda prvpr ;load previous reading 1070 ora b 1080 sta prvpr 1090 pres2 pop b 1100 ret 1110 pres1 lda prvpr ;find out if any were set previously 1120 ora a 1130 jz pres2 ;none before 1140 mov b,a 1150 lda prerq 1160 ora b ;include bits set in b 1170 sta prerq 1180 xra 1190 sta prvpr ;store 0 for the previous reading 1200 pop b 1210 ret 5000 ppadr equ 1800h 6000 *RAM 6001 prvpr equ 08ffh 6002 prerq equ 08feh 0000 org 03e8h 0001 jmp rdsld 0002 jmp clman 0003 jmp nmmsk 0004 jmp msknm 0005 jmp swpnl 0006 jmp clsw 0100 org 009bh 0110 ****************************************************************** 0120 * 0130 * Written by Bruce Cichowlas 9/3/76 0140 * Copyright Circle C - ARP Instruments 9/16/76 0150 * 0160 * CLSW - clears all switches. No arguments. 0170 * SWPNL - sets the switches from the scratchpad. Just 0190 * one byte of them for now. No arguments. 0200 * 0210 * MSKNM - Converts a one bit mask to a number from zero 0220 * to seven indicating bit position, e.g. 01h becomes 0, 0230 * 80h becomes seven. Input and output are from the A register. 0240 * 0250 * NMMSK - Performs the inverse operation of MSKNM. 0260 * 0270 * CLMAN - Clears the manual lights for the slidepots. No 0280 * arguments 0290 * 0300 * RDSLD - Reads a slidepot. On input, A contains 0310 * the slidepot number, and on return it contains the 0320 * slidepot's current value. 0330 * 0340 ******************************************************************** 1000 clsw equ $ 1010 sta swclr 1020 ret 1030 swpnl equ $ 1040 push h 1050 push d 1060 lhld prbas ;base of scratchpad 1070 lda slcnt ;slide count 1080 mov e,a 1090 mvi d,0 H 1100 dad d ;calculate address of switch values in the scratchpad 1110 mov a,m ;get word 1120 cma ;since switches use negative logic 1130 sta setsw ;set the switches 1140 pop d 1150 pop h 1160 ret 1170 msknm equ $ 1180 push b 1190 mvi b,7 1200 mskn1 rlc 1210 jc mskn2 1220 dcr b 1230 jnz mskn1 1240 mskn2 mov a,b 1250 pop b 1260 ret 1270 nmmsk equ $ 1280 push b 1290 mov b,a 1300 mvi a,1 1310 inr b 1320 nmms1 dcr b 1330 jz nmms2 1340 rlc 1350 jmp nmms1 1360 nmms2 pop b 1370 ret 1380 clman equ $ 1390 push b 1400 push d 1410 push h 1420 lda slcnt ;slide count 1430 dcr a ;convert to offset 1440 clma1 push m 1450 lhld lgbas ;man/auto light copy base 1460 call wrdbt ;get wrdbt offset 1470 xra a ;for reset 1480 call setwb ; adjust bit 1490 lxi h,lgdev ; light device 1500 mov e,b 1510 mvi d,0 1520 dad d 1530 mov m,a ;store new value 1540 pop m 1550 dcr a 1560 jp clma1 1570 pop h 1580 pop d 1590 pop b 1600 ret 1610 rdsld equ $ 1620 sta mxadr ;slidepot's MUX addr 1630 nop ;wait for MUX to settle 1640 nop 1650 sta strtc ;start conversion 1660 mvi a,6 1670 rdsl1 dcr a ;delay 1680 jnz rdsl1 1690 lda adout ;get a/d value 1700 ret 7000 *ROM parameter table 7001 prbas equ 0400h ;base of scratchpad 7002 slcnt equ 0402h ;slide pot count 7003 lgbas equ 0403h ;man/auto light copy base 8000 *Device addresses 8001 swclr equ 3003h ;store to this location clears the switch settings 8002 setsw equ 3004h ;store to this setting stores the complement of the 8003 * ;input into the switches 8004 mx88adr equ 3000h ;store to here sets the MUX slidepot address 8005 strtc equ 3002h ;store to here starts the conversion 8006 adout equ 3000h ;this is where the a/d output is put 8007 lgdev equ 3001h ;store to here sets the man/auto lights 9000 *Subroutine 9001 wrdbt equ 03e5h 9002 setwb equ 03e2h equ bins 6060 * 8000 swtch equ 01800h 9000 sortn equ 03f4h 9010 bncnt equ 03e

17 years, 5 months

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test-drb December 2006