sup8pdct

The chip marked 6810 is a 128 bytes of static ram. James

Its written in Synassembler. Need to load each file and print them out. James

to add CR and LF, do the following. xrl a,#9bh ; 00e4 - d3 9b S. = 9B EOL? jnz X00ec ; 00e6 - 96 ec .l jump if not mov r1,#0ah ; 00e8 - b9 0a 9. change to CR ; ; for cr-lf, change following to- jmp x01c0 ; 00ea - 24 c0 mov r3,#0 ; 00ea - bb 00 ;. set eol flag ; ;--------------------------------------------------------------- X00ec: nop ; 00ec - 00 . nop ; 00ed - 00 . -------------- snip -------------------------------------------- X01bd: nop ; 01bd - 00 . ; ;add following here for CR- lf ----------------------------------------------- ; org 1c0h x01c0 mov r3,#0 ; 01c0 - bb 00 nop ; 01c2 - 00 . nop ; 01c3 - 00 . nop ; 01c4 - 00 . nop ; 01c5 - 00 . mov a,r1 ; 01c6 - f9 y outl p1,a ; 01c7 - 39 9 out to printer anl p2,#0efh ; 01c8 - 9a ef .o assert strobe orl p2,#10h ; 01ca - 8a 10 .. release strobe mov r1,#0dh ; 01cc - b9 0d 9. jmp x00ec ; 01ce - 04 ec ; end add following--------------------------------------------------------------- ;----------------------------------------------- same as 1st half of rom org 200h That should work. totally untested. James

Looking through the code, this device responds to both P1: and P2: just like the 850 interface. James

Check out schematic of XF551. It uses a 8050 or 8040. same as 8049 except for amount of ram. it has a similar latch with external rom. It would appear that all code required is below $200. Cannot find any calls or jumps in 1st $200 to reference anything from $200 on. So all the rest is for ?? James

Found this interesting page. http://ftp.isu.edu.tw/pub/Hardware/modem/Diamond/supra/supra/deadprod.txt A line says this C64 Big Blue - printer interface (OEMed to CardCo) -NSR since '92 Maybe 1st half is c64 stuff. James

the 374 would be latch for the lower 8 address lines for the rom. Data and lower address share the same bus on the 8049. Pin 11 from 8049 is used to latch the 374. James

Looks like you use D48. James

Had a bit of a look at the rom. Is there a jumper from the highest address line of the rom? The 8049 can only address 2K of program memory unless there is bank switching going on which is unlikely. The rom is 4K. The 1st 2k i cannot make much sense of at the moment. The 2nd half however has code that appears to do SIO, add up chksums of 40 bytes of data , sends Ack and looks for $9B. Am wondering if there is a C64 version of same printer interface. James

Usually you need to set printer to carriage return after line feed. Old dot matrix printers had such a switch. not sure about the new ones. There maybe a ESC code to set it. James

one for me too. James

I thought the scenery disks were one thing i would never see in my lifetime. Good to see. :) James

I have one here for 230V.I just simply swapped the internal transformer for one with similar secondary specs but with the higher voltage main. It even bolted down in same holes. James

I have had a look at both source comparing it to original program and they are not the same. many parts are the same, some have slight differences and others are very different. wounder how work is going on contents of hard drive? Spotted something interesting in source how ever. Some names of solar systems and where they came from.. SOLNAM DB $80+'S','ol' ;HERE DB $80+'X' ;STARBASES DB $80+'X' DB $80+'X' DB $80+'X' DB $80+'G','idney' ;GIDNEY & CLOID DB $80+'M','ongo' ;FLASH DB $80+'G','azoo' ;FLINTSTONES DB $80+'G','ort' ;DAY THE EARTH DB $80+'A','yesha' ;SHE DB $80+'T','omania' ;GREAT DICTATOR DB $80+'G','onzo' ;MUPPETS DB $80+'M','ote' ;NIVEN DB $80+'B','ellus' ;WORLDS COLLIDE DB $80+'K','andor' ;SUPERMAN DB $80+'A','ltair' ;FORBIDDEN PLNT DB $80+'V','ultan' ;FLASH GORDON DB $80+'W','oola' ;TARZAN'S SON DB $80+'L','aika' ;RUSS SPACE DOG DB $80+'K','arza' ;MICRONAUT DB $80+'I','skandar' ;STAR BLAZERS DB $80+'K','ato' ;GRN HRNT SDKIK DB $80+'K','hartoum' ;GDFTHR RCEHORS DB $80+'B','agheera' ;JUNGLE BOOK DB $80+'G','ammera' ;JAPANESE MNSTR DB $80+'K','repysh' ;HORSE ASSASIN DB $80+'T','hrintun' ;NIVEN DB $80+'B','adenov' ;ROCKY/BULWINKL DB $80+'M','urania' ;PHANTOM EMPIRE DB $80+'S','ehlat' ;STAR TREK DB $80+'T','rantor' ;FOUNDATION DB $80+'L','othar' ;MANDRAKE MAGIC DB $80+'M','ach' ;SPEED RACER DB $80+'B','oskone' ;E. DOC SMITH DB $80+'D','iscojon' ;FOR ME TO KNOW DB $80+'S','tarbase' ;STARBASE n Wounder what 2nd last one means? James

I will amend post to 'on way to candle' Oh wait i can't, edit time has expired. James

Just 2 random carts. Both not in properly. Candle should have it by now. will se what he says. James

No. Daughter decided to shove in 2 cartridges while it was going despite me saying "DON'T TOUCH IT" while i was setting up CF card. This totally stuffed it. So the problems with XL side of incognito now pales into insignificance. Board is currently on way to/at Candle for repair. James

Give this a go. Setup a 1440 sector blank image on your sio2sd and run the format program included on the disk. then write out dosxe to the image to save changes. I dont use Dosxe.I use sparta or superdos or dos 2.x and its clones. dos_xe.atr James

I don't have sio2sd so i cannot say what the percom block it sends back for 1440 sector (DSDD) image, otherwise i could make a drive type but it would be a guess. Best i can do is to send you a Dosxe with the xf551 drive type removed and then use the format program in listed thread to create a new drive type of 1440 sectors for Sio2sd and use high speed. I dont know what max speed the dosXE highspeed sio routines can handle. I have tried the USD speed and it mostly worked for me and Sio2USB. James

I found a version of starraiders on this disk that requires the basic cart to load and run. Don't know if someone has gone to a lot of trouble to get rom code and move it down lower in memory changing all pointers etc or it was a disk or cassette version (was one made?) There are other what it thought were Cart only based games on this disk as well. Note the Dos version on this disk is.. Dos 1. DISK_39B old games.ATR

Add one for me please. James

The latter 800's had those black plastic holds down either side of the boards was not installed and a single black plastic spacer went over the center of all boards. As for the rom board, it could be another os like omnimon or smilar. James

There was a service directive from atari to remove the ram cases because of over heating. I have the service bullion here somewhere. James

Finally installed my Incognito today. Apart from the ribbon cable installed wrong way on the chip adapter,install went ok. Had to install updated file on page 2 of this thread to get carts working. Now have a problem. XL/XE standard and Highspeed won't boot up at all (screen stays black) . Only Diag carts like Star raiders work. Q-Meg os works but sparta dos doesn't. Can boot up different dos and use it including using Ramdisk. Cannot get my external spartados to work in any xl/xe os. Coleen modes appears to work fine including sparta dos, external sparta dos cart works as well. What could be wrong? James

Why not use a gps module? Signal is available everywhere, easy to interface to. James