Re: Raw reads from PS/2 port

Posted on 2016-04-28, 21:55

by

by BloodyCactus

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

ps2 used to be hooked to the 8042 controller chip and setup for IRQ. ps2 is weird, since it contains the A20 gate code. lots of companies made the bigass DIP chip thats in old ps2 keyboards. I have no idea whats in a modern one. its clock rate is 'falling edge', so you can bitbang it at any speed …

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Re: Raw reads from PS/2 port

Posted on 2016-04-28, 18:04

by

by BloodyCactus

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There are no optocouplers on MIDI outputs, and 31250 is perfectly standard uart speed with zero error when using 16 MHz clock source, affected only by the clock source tolerance. MIDI specs require 1% baud rate tolerance, usually Arduinos have ceramic resonators and those should be within 1% …

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Re: What retro activity did you get up to today?

Posted on 2016-04-28, 17:08

by

by BloodyCactus

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

nice! i spent years working on as/400's or iseries or whatever its called now. spent time on rs/6000's and z900

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Re: Raw reads from PS/2 port

Posted on 2016-04-28, 14:17

by

by BloodyCactus

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

when dealing with midi you need to be using optocouplers to isolate the midi uart signal. also midi is a non standard uart speed (31250), so you need to get your arduino clock to accept non standard baud rates within the error margin of 31250.

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Re: Commodore 128D repair

Posted on 2016-04-28, 12:45

by

by BloodyCactus

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

nice. can you do 80 column on that monitor? I have my 128DCR hooked to a 1902A which is nice as it can do the 40/80 col 128 modes. I have an c128 to vga adapter from back in the commodore128.org forum days but never got around to using it since I have the 1902a. now you just need to buy the C128 …

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Re: Other hobbies?

Posted on 2016-04-28, 12:42

by

by BloodyCactus

in Milliways

in Milliways

hobbies.. oooh.. pinball, real phsycal pinball not virtual garbage. hiking/camping/backpacking/long distance hiking/fishing/mtb.... hiking the appalachian trail >12? years ago, is how I met my wife and ended up being stuck living in america instead of moving back to australia. now i have wife/kids/ …

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Re: Phil's "Playing GOG.com games on your MS-DOS Gaming PC" Thread

Posted on 2016-04-26, 17:58

by

by BloodyCactus

in DOS

in DOS

Are GOG.com ScummVM games automatically incompatible with real DOS? I just bought The Dig, Sam and Max, and Loom on sale and all three use ScummVM. edit: nevermind. I just remembered that I got Indiana Jones and the Fate of Atlantis working in DOS and it was a ScummVM game. So I will do some more …

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Re: gdb/debugging a dosbox error

Posted on 2016-04-24, 13:17

by

by BloodyCactus

in DOSBox Development

in DOSBox Development

whats interesting is, if I set ramsize to 32... it works (throws some cpu errors below), but setting it to 64 also segfaults... Illegal read from 2000000, CS:IP 8: 1840 Illegal read from 2000000, CS:IP 8: 184c Illegal write to 2000000, CS:IP 8: 1852 Illegal read from 2000000, CS:IP 8: 1856 Illegal …

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gdb/debugging a dosbox error

Posted on 2016-04-23, 21:33

by

by BloodyCactus

in DOSBox Development

in DOSBox Development

got an error in dosbox built from svn this morning; I'm in gdb and I've narrowed it down a bit. Program received signal SIGSEGV, Segmentation fault. 0x000000000043abb5 in PAGING_LinkPage (lin_page=4096, phys_page=4096) at paging.cpp:703 703 if (handler->flags & PFLAG_READABLE) paging.tlb.read[lin_ …

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Re: What's your favorite DOS RPG?

Posted on 2016-04-22, 12:45

by

by BloodyCactus

in Milliways

in Milliways

later levels require lots of up/down backtracking, the levels get very 'not straight forward'.

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Re: Best CF card in "Fixed Disk"?

Posted on 2016-04-21, 23:21

by

by BloodyCactus

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

yeah I realised at the end we were probably talking the same thing 😀 making dinner, kids yelling + doing homework + writing on forum all same time probably not a good idea for me 😜

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Re: Best CF card in "Fixed Disk"?

Posted on 2016-04-21, 22:33

by

by BloodyCactus

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

yeah but you cant do 'fdisk /mbr" against a CF card, that was the whole point you had to use a utility to actually create it on CF cards, USB sticks etc. But that's exactly what I did :) heh ;) then it did not do what you think it did, fdisk /mbr always will overwrite the mbr on c:, fdisk /mbr puts …

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Re: What's your favorite DOS RPG?

Posted on 2016-04-21, 19:17

by

by BloodyCactus

in Milliways

in Milliways

I was reading up on the Eye of the Beholder series. Is it true they are very short games? Based on Let's Play series and howlongtobeat.com, all three EOB games are about 10 hrs long each. they are short, IF you know what you are doing, have played them before and know the maps. first time playing? …

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Re: Best CF card in "Fixed Disk"?

Posted on 2016-04-21, 18:07

by

by BloodyCactus

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You mean running fdisk /mbr in DOS? I had to do this with all of factory new SD and CF cards. Also one hard drive. yeah but you cant do 'fdisk /mbr" against a CF card, that was the whole point you had to use a utility to actually create it on CF cards, USB sticks etc. in linux you can do the …

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Re: What's your favorite DOS RPG?

Posted on 2016-04-21, 18:05

by

by BloodyCactus

in Milliways

in Milliways

bards tale ii was great. wasteland was one of my ultimate favs, that with Magic Candle 1, Pool of Radiance/Azure Bonds and Demons Winter are so much fun to play! Magic Candle 1 is so overlooked.

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Re: Best CF card in "Fixed Disk"?

Posted on 2016-04-21, 17:29

by

by BloodyCactus

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I think there is some confusion here. It used to be that old CF cards did not always have an MBR, they just had a boot sector. some did, some didnt. Best thing to do is just add an mbr. (fdisk in linux will do it just fine). same with usb sticks. you can try the good old "HP USB Disk Storage Format …

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Re: Is anyone familiar with watcom c compiler?

Posted on 2016-04-21, 12:25

by

by BloodyCactus

in Milliways

in Milliways

nothing simple. your missing libs/headers or your setup is not correct. the things your missing like PCI_AGP_CMD are present, but your not getting them in the output you need because they are not being defined and included by correct compiler dependancies. you dont seem to have the C knowledge to …

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Re: Commodore 128D repair

Posted on 2016-04-21, 01:46

by

by BloodyCactus

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I checked all the solderings tonight (with the help of my friend Francis) No problems where the solderings looks bad. According to Commodore 128 trouble shooting guide i have decied to replace the ROCKWELL R65C22P2 DIP-40 Versatile Interface Adapter (VIA) 16 I/O. I orderes two on eBay just know - …

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Re: My woes with GeForce-4 and Unreal Tournament 99 and how to solve it.

Posted on 2016-04-20, 19:45

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by BloodyCactus

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

hmm the 5xxx geforce is pretty much universally regarded as the worst geforce series ever. ti4800 was a beast of a card tho. loved my g400max but no t&l really hurt 🙁 my hats off to you for testing so many driver versions tho! 😀 nice work

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Re: Sound blaster 16 Wave Effects

Posted on 2016-04-20, 17:59

by

by BloodyCactus

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

its also CQM based... not something I think one would actively hunt down...

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