iiinova — where your digital self keeps evolving

Tough balancing act on the effect of the wake between loss of downforce in the turn, loss of drag on the straight, and the AI coping with the speed differentials - especially once it stacks behind a train of cars. This is gamedev footage from my US Open-Wheel 85-95 Manager. #gamedev #ad

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Here is a look at the telemetry screens I added that you can drag to other monitors in the launcher that is currently in 'final' testing. #simracing #retrogaming #indycar

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I think I've finally hit release candidate status on the IndyCar Racing launcher. It appears to be getting through every 200 lap race regardless of my config now I fixed a memory leak in the original software. Letting it run a few full races with me sat in the pits, then I'll have to drive some.

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Race Sim Central @racesimcentral.net · 29/09/2026

IndyCar Racing (1993) had a memory leak from probing the com (mouse) port and joystick port throughout races. If you DIDN'T have a joystick or mouse those probes were never cleared so completing the 500 on keys (if you also didn't have a mouse) with the minimum spec pc was never actually possible.

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There's also a visible (subtle once again) tire scrub in the turns. As a manager, you'll be trying to tweak your setup and trim it out for qualifying. Long way off, but you can wishlist US Open Wheel 85-95 Manager on Steam.

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Race Sim Central @racesimcentral.net · 29/09/2026

A lap of the game I am developing, bringing the underlying physics forward visually. Showing both right side tires and the chassis squatting on its suspension, this is showing the deformation in the tire, the stagger on the RR and (subtle though it is) camber on the RF. #gamedev #ad

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Race Sim Central @racesimcentral.net · 28/09/2026

The VGA fault exception handler is dealing with about 60 million per race to maintain stability. Holy divide by zero, batman.

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Race Sim Central @racesimcentral.net · 28/09/2026

Hooking up the IndyCar Racing (1993) launcher menu to edit the main .ini file parameters. #simracing #retrogaming #indycar

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Race Sim Central @racesimcentral.net · 28/09/2026

This IndyCar Racing launcher is by far the most complex thing I have ever done. Testing it is insane work. I have 4:3, 16:9, different resolutions at 16:9, windowed, fullscreen, telemetry in window/screen, telemetry on additional screens and a lot of writes to things like draw distance.

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Race Sim Central @racesimcentral.net · 26/09/2026

It’s kind of amazing how much of a difference storage has made to sone of these systems

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Windows version of the IndyCar Racing (1993) Paintkit utility is now available. You can use this to edit the cars whether you end up using my launcher or not (if you want to continue using DOSBOX or something) on your modern PC. racesimcentral.net/indycar-raci... #simracing #retrogaming

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One of the weirdest interactions I had today was someone thinking it would be insulting to say a vintage video game (that I had no part in creating) looks old.

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I would love to if I could leave it there until the next weekend. ;)

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Race Sim Central @racesimcentral.net · 24/09/2026

Bet you've not seen this before, or for a very long time... Two car multiplayer in IndyCar Racing (1993), working (badly) in Windows 11. #simracing #retrogaming #indycar #ad

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All 32 of your AI opponents will be visible. View distance has been doubled, which is especially important now its running 16:9 instead of 4:3 (in the screenshot you can now see the backstraight). Coming soon with my IndyCar Racing (1993) launcher #simracing #retrogaming #indycar

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Race Sim Central @racesimcentral.net · 24/09/2026

IndyCar Racing (1993) had a bug that would occasionally interrupt and write some colors as 0 in the palette when it rained. That will be fixed in my upcoming launcher. Pics show fixed rain colors, dry colors, bugged rain in original program. #simracing #retrogaming #indycar

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Race Sim Central @racesimcentral.net · 23/09/2026

The Thrustmaster T2 on display at the Sim Gaming Expo had something extra. This wheel belonged to Niels Heusinkveld and has a USB port on the side, because he added a USB controller to it, so it works on modern PCs! This old stuff is hard to resist. #simracing #retrogaming

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Added translucent smoke and dirt clouds in the process, just for fun. Those were originally first seen with the NVIDIA NV1 accelerated version of NASCAR Racing from 1995.

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Tim Wheatley @88mphtim.tv · 22/09/2026

It works. IndyCar Racing (1993) running at a higher real resolution than 320x200(240). First image is the original resolution... Look along straight edges to see how many pixels you see versus the second image. #simracing #retrogaming #indycar

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Reposted by Race Sim Central

Run-through of the intro sequence for Waterline, a 'space game on a single planet' that I am developing. None of the ships are final, obviously. #spacegame #gamedev

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Of the sims I have looked at so far only Grand Prix Legends has x87 instructions, but that was a Win98 era release. NASCAR 1, INDYCAR 1, INDY 500 don't use any.

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IndyCar Racing is DOS 4GW 32bit protected mode, so it's just another environment and is running on the modern CPU with a vectored exception handler. Theoretically any DOS 4GW title can be made to run this way.

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Image shows the original 320x200 (which was displayed at '320x240') at top left compared to the 3D drawn at other resolutions. I do feel that the gains above 800x600 are limited in visuals, and the texture quality tops out at 640x480.

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Race Sim Central @racesimcentral.net · 21/09/2026

I'll be able to push more pixels out of IndyCar Racing (1993) via my launcher if I can get all the 2D elements (overlayed bitmaps like the logo and sprites like the driver helmet) to scale to each selected option. #simracing #retrogaming #indycar

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I'd like to also thank the show runner, Jorge, my sponsor, SimCraft, and my family for their support, time, and the space I needed to figure this out. SGE has announced 2027 dates. 2026 was bigger and better. Looking forward to it! #simracing

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Race Sim Central @racesimcentral.net · 21/09/2026

Thank you so much to everyone who came to the Sim Gaming Expo and said hello. I've done events while working for various sim racing studios, but being able to just share my passions for these things with people who feel the same way I do was such a great experience. #retrogaming

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Race Sim Central @racesimcentral.net · 21/09/2026

Forgot to turn it off when i went to the sim gaming expo today... and it still hasn't crashed. i'd say that's stable at least in that session type!

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I want the experience of getting to a stable setup then trimming to get maximum speed as the challenge it really is.

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Some footage of the tire contact patch and shape adjusting with load in US Open Wheel 85-95 Manager (work-in-progress) that I posted an image of on Friday. I see setup adjustment at this specific oval to be fascinating. #simracing #gamedev

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This is running the x86 instructions from the originally DOS-packaged title on my modern CPU in Windows 11 - and isn't an emulator. The AI did 1.5 Indy 500's without a game crash overnight.

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Left the AI running laps in IndyCar Racing (1993) practice while I slept. The last fix (class to struct) to help it with some data handling has really reduced the crashes and this might be released soon now. #simracing #retrogaming #indycar

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