Re: Xi 8088 by Segey Malinov
Posted on 2016-06-30, 01:41
nice! congrats. Damn I gotta get working on the XT CF Lite card...
Re: Xi 8088 by Segey Malinov
Posted on 2016-06-29, 21:30
I have 4 or 5 isa backplanes here. A couple have screw terminals with no PSU connector, these dont appear to work unless you can supply the -5, -12 to the lugs. I'm looking at 8 slots. cpu/xtcf/network/vga/sound/somethingspecial 😀
Re: Bought these (retro) hardware today
Posted on 2016-06-29, 00:40
luckybob wrote: wow, thats an expensive book on ePay! I want one now! heh I didnt check ebay, I see indeed it is more expensive there.. wow. lots more.. I got both for $5 off amazon used books, free shipping.
Re: Bought these (retro) hardware today
Posted on 2016-06-28, 21:46
$5! still has the sealed pouch in the back with the disk, never used.
Re: The Soundblaster DSP project
Posted on 2016-06-28, 15:05
its just a plcc or soj chip so should be simple enough to hot air it off and back on. without knowing what functionality/bug fixes youd loose by downgrading from 4.11 to like 4.05 or something, and dsp of 4.16 dont come in same package, I dont think its worth investigating.
Re: Xi 8088 by Segey Malinov
Posted on 2016-06-28, 14:30
yeah i had my bench psu on 0.4a to be safe for the 5vrail so was lucky shorting didnt dump much current in as the bench over volt/overcurrent/short protection kicked in.
Re: Xi 8088 by Segey Malinov
Posted on 2016-06-28, 13:57
I placed the jumper to enable the on-board speaker (jumpers 1+ 2), powered it on, and immediately smelled smoke. Turned everything off and re-checked. Apparantly I jumpered 3 + 4, not 1 + 2, so I shorted +5v to ground. I have no idea if this may have damaged anything. I just wanted to quote this …
Re: Xi 8088 by Segey Malinov
Posted on 2016-06-28, 02:03
tried the 40mhz oscillator, which would be about 15mhz, xi8088 would post (play its 5 note song) but the VGA card would not come up. I need to grab some bits from Mouser for the XT CF IDE-LITE card so I'm going to grab a 36mhz osc, which should be 12mhz turbo and see how it goes. turbo at 8mhz seems …
Re: Bought these (retro) hardware today
Posted on 2016-06-28, 00:52
Got my 8bit 3com 3c503 for my 8088 build! I did some googling, you can apparently put the XTIDE ROM into the socket and it works (not 100% on the details tho).
Re: Xi 8088 by Segey Malinov
Posted on 2016-06-27, 23:59
so, got my last chip today! http://i.imgur.com/V2SsE5Nh.jpg no psu tho.. so time to break out the bench top psu's and rig up a +12 +v... hmm I get a 5 note startup tune.. keyboard lights flashed.. I can ctrl-alt-del reboot.. lots of faffing with switches... Eventually I pulled the psu from my …
Re: Sergey's ISA OPL2 card mod to OPL3 (preliminary/preparation)
Posted on 2016-06-26, 19:41
Ill keep an eye on this topic to see where you go with it. I'm sticking to sergeys board as is, I think an adlib clone is perfect for an 8088! You should prototype up a new board in diptrace or circtuit maker or something (please not eagle or kicad they are abortions!)
Re: 5511emu - IBM JX/PCjr emulator
Posted on 2016-06-24, 23:43
built it on linux 64bit, it segfaults in opengl (nvidia) for me. Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7fffe9de2700 (LWP 9347)] 0x00007ffff0e86be9 in glEnable () from /usr/lib/nvidia-352/libGL.so.1 (gdb) bt #0 0x00007ffff0e86be9 in glEnable () from /usr/lib/ …
Re: Bought these (retro) hardware today
Posted on 2016-06-23, 01:18
picked up a 3com 503 8bit isa with rj45 jack for my 8088 build, its known this card works on 8088 which is nice.
Re: What retro activity did you get up to today?
Posted on 2016-06-23, 01:17
Installing the Watcom C++ compiler in Dosbox because I need to compile a 1994-vintage DOS program and I only have my Win7 laptop with me. nice. i have 10+11 (a/b/c) and a I have built open watcom 2 for dos as well. 10 can make 8088/8086 code but 11+ow2 cant, which is interesting. 11c also dropped …
Re: Why did I buy an XT clone and what am I going to do with it?
Posted on 2016-06-22, 18:18
my xi8088 board is going to do duty as my CP/M machine and for tinkering with my own mini shell os thing.
Re: What retro activity did you get up to today?
Posted on 2016-06-22, 11:06
Flashed v1.07 ROMS for my MT-32, upgrading over my v1.05 factory roms.
Re: Xi 8088 by Segey Malinov
Posted on 2016-06-22, 11:04
Its probably to do with that its FF because when ram is not present, you get an FF on the bus because the lines are pulled high by default.
Re: Xi 8088 by Segey Malinov
Posted on 2016-06-22, 02:24
i flashed my 128k v2+xtide bios tonight in my g840. I'm missing ONE chip 🙁 aaargh. mouser sent me a 74F112 instead of a 74F11.... sigh. i need to buy a single 60c chip 🙁
Re: Xi 8088 by Segey Malinov
Posted on 2016-06-21, 01:07
🤣, SOIC 😀
Re: What retro activity did you get up to today?
Posted on 2016-06-20, 21:26
working on messing around with the classic Small-C compiler.
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