Recent content by voidstar78

The IF in the BASIC on these systems is limited (to a control branch). So to check memory, it would be something like:

For PALM stuff... More examples are on this page. About 1/3rd down is an example PALM program to display all the character set. That same general reference can be used to write to higher up addresses. It's not document in the IBM manuals, but pressing COMMAND+ATTN during the ROM index counts...

Some notes in case it helps: BASIC tokens on this start at address 0x120E Verified the following in the emulator... If you use command RUNS (instead of RUN), numeric arrays will be packed as 4-byte single-precision instead of 8-bit double-precision. However, DIM'd arrays in this BASIC are...

Thanks, yes I didn't state or clarify that part very well. The theme there (in my thinking) was more along the lines of "things that helped make integrating RS-232 easier and cheaper." Somewhat related, I did a video involving 16550 UART and those 75188/75189 chips. Not so much deep details...

I wasn't sure if the topic of RS-232 would be all that interesting - but I've had a lot of positive feedback on the recent discussion about it at VCF. I have the slides (and extra sub-notes and details) archived here (useful maybe if anyone wants to replicate or compare to the RS-232...

Hey, @apl-vade-mecum ping'd me and reminded me about this thread. First, wow @Pitou this is incredible work and collaboration, and brave of you to get so very hands on into the memory board of these systems. Seeing your screen shot with the 44KB RWS listed on the console (and extra 4KB used...

Fair, that's only if he chooses to become a publicly traded company (to try to help pay for things). Imagine that, Commodore ringing the bell at the opening someday. Dell went private and back to public over its lifetime. None of the new retro systems (that I'm aware of) have become...

I wasn't into the Commodore scene in the 1980s - I grew up in the Tandy Color Computer "ecosystem." But I think all this recent activity is great! I wish Tandy would even get back into the game - down the street from me is Tandy Leather, with a huge store along I-20 selling leather cow...

Yeah, the best 486DX laptop I have is the Toshiba Satellite T1960CT (very compact, DX2/50). Just in general 486DX's (laptops) just don't seem as easy to find these days (which just leads me to think not as many were made)

I have one of those Logitech WingMan Thrust 3D force-feedback sticks, but it's not very good (at least for flight sims, the range seems unusually limited -- and I can't find any DOS software that really uses the force feedback feature; maybe it's more suited to Win95/DirectX stuff). And I think...

Main appeal to me is less power and noise. Don't need a fan, can get by with a good heatsink on the CPU. These days I'm the opposite of an overclocker (until it comes to rendering video, then every core better be sizzling). The appeal is also just representing the historical period of what...

So, I know this post is ancient - but I wanted to report about how I was recently using a 486DX4/100 setup when using an ISA 16-bit VGA (a 1994 Diamond SpeedStar 64), and concur that Quake wasn't running very well (CF emulated IDE drive and SB16 audio). But the mainboard I am using has 3x...

I had trouble using SDDRV.SYS and SDLPT off the parallel port that was attached on an MDA (monochrome) card. It worked fine when attached to the parallel port of the main system (which had the default port number). So I'm not sure if the issue was using a non-default port number, or some...

Just odd that it only impacted the "boot-ability" of the drive. Otherwise, once booted (from floppy), the CF content was readable and runnable as normal. I suppose that matches to the PC-hardware setup experience throughout most of the 90s - finding a compatible combination of the particular...

Sort of solved: I swapped the CF card from a 128MB card to a larger capacity 512MB CF card. The 512MB CF card was not already formatted. So I booted from the DOS 6.20 boot disk, did FORMAT C: /S Then removed the disk and rebooted. The drive still would not boot. So I booted back to the...