Howdy, I just added a new Perl script to the group's file section called "obj2bin". This parses a TRS-80 /CMD or /CIM or /SYS file and dumps simple binary...
... photos somewhere. ... Any progress on this, David? If I post my needlessly-complex schematics, I will surely face universal derision if I don't have a ...
Hello, I was disassembling the LDOS-5.1.3 patches to SYS0/SYS that read from the Newclock-80, with the goal of producing patches for LDOS-5.3.1. However, I...
Sometimes the code jumps to the 0F not the ED 0F. That was an old Microsoft trick. Could it be? ... From: bartlett.peterj Hello, I was disassembling the...
... Microsoft ... Thanks for all the ideas, everyone... turns out it was a simple typo in the magazine. The version of the patch included with the Newclock- ...
Digging thru my old stuff I found a copy of G2's Level III BASIC. It's an add-on to Model I Level II and Disk BASIC that adds a lot of command found in much...
Some of you may have seen the PC-to-TRS-80 parallel port interface circuit that I posted to this group's "files" section a few months ago. In my corresponding...
Mission accomplished! unit functions 100%, installed the "new" Alps keyboard, stuffed it all back into the case. Thanks All for the Help! it was fun! Now it's...
... Unfortunately a pin-for-pin replacement can't possibly have descenders. The MCM6670 is a 5 wide by 7 high pixel ROM, and you'd need more than 7 rows to...
Peter, Â Thanks, I've been looking at the mod, I may have to consider it more seriously. Â I may do the newclock-80 circuit, I had the original one, back in...
... more seriously. ... the day. ... If you decide to do it, let's talk... the instructions I posted are probably a bit light and perhaps incomplete. Don't get...
... When we talked before about this, I was thinking that an EPROM should be able to do this with some re-wiring, and a bit of work to make the character sets....
Yeah, we did, I guess I'm looking for an orignal character generator to make the repairs and then leap out to the new eprom. I hate pulling a chip from a...
Hi, Some time ago i started playing again with my TRS-80 model 1 and tried to connect the TRS with a PC. As most PC's or laptops have no parallel or serial...
... I have done that in my old Video Genie (which is modified beyond recognition). I'm using a 2732A EPROM (2716 is ok too) for charactergenerator and it needs...
Howdy, I just posted schematics for an Alpha Products compatible joystick interface in the files group. It supports both 4- and 5-bit modes. Yeah, it's more...
... That would be databit 7 and there are several ic's involved though I would suspect the 2102 first. I think it is very typical to use that 2102 for...
Almost there! It powers on! it boot's to DOS! it's stable! One problem remains, graphics are still a problem see If I fill the screen with chr$(191)'s this is...
So, I'm using James Talley's machine language sound routine for some basic music and sound effects in a version of DOND I've written. The problem is that when...
Al, I'm not familiar with the routine you're using, but it obviously doesn't take double-width mode into account. Both sound and double- width are controlled...
Hello all, I've decided I will probably never get around to doing anything with my old TRS-80 model 1, so while its still working I've put it up on the block....
Folks, I'm trying to disassemble and debug a machine language subroutine for sound/music that James Talley wrote (see my previous post about calling a machine...
Al.Wallace@...
Feb 17, 2009 10:32 pm
2877
... listing, ... ... Al, What's the memory address these instructions get poked into? I've copied the data staements over to my TRS-80 and I've poked them...
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