Mastodawn

Here's the main bug fix in the Tandy 1000 BIOS v1.01, seen on the right, needed for proper hard drive controller operation.

v1.00 configured the DMA controller for "extended write mode", which is not the DMA timings that the controller expects, which can lead to data corruption.

v1.10 as you can see does not set that bit. This fix is made in two places where extended write mode was set.

#retrocomputing #tandy1000

root42 4d ago

Want to know what a serial port retro sound card sounds like?

TND232 Tandy Serial Port Soundcard
https://youtu.be/y10Cp526Z0A

#tandy1000 #soundcards #msdos

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gloriouscow 6d ago

success!

..okay, this was kind of a case of me kicking myself in the ass for two hours.

I use 1.02 in my own emulator when emulating the Tandy 1000. It works fine. Apparently it shouldn't.

Another one of those fun cases when your emulator is inaccurate enough that something that shouldn't work, does.

#retrocomputing #tandy1000 #onerom

gloriouscow 6d ago

This is the Tandy 1000 20MB Disk System.

Most Tandy machines didn't really have the space to have an internal hard drive. Even if they did, the original Tandy 1000 had a 54 watt power supply, so plugging a hard drive in was likely to make it fall over.

This solved both problems - this external chassis has its own power supply.

#retrocomputing #tandy1000

root42 Mar 23

New video: TND232 Tandy Serial Port Soundcard

The Tandy 1000 and IBM PC Jr utilized the cheap Texas Instriuments SN76489 programmable sound generator. While it never caught on as a sound standard outside of these machines, many DOS games from the 1980s still supported this chip. What if you wanted to listen to video game music using the original chip, no emulation, but you had only a serial or USB port?

https://youtu.be/y10Cp526Z0A

#retrocomputing #msdos #tandy1000

root42 Mar 20

New video for Patrons:

TND232 Tandy Serial Port Soundcard

https://www.patreon.com/posts/tnd232-tandy-153488640?utm_medium=clipboard_copy&utm_source=copyLink&utm_campaign=postshare_creator&utm_content=join_link

#msdos #retrocomputing #tandy1000 #chiptunes

Famicuber Mar 10

More Keen 6 covers for the SN76489 chip after an exhausting three days of work, I've put some more time into making this as it is one of my favourite tracks of the series, I'm quite pleased how it turned out. :)

#commanderkeen #chiptune #furnace #segamastersystem #tandy1000

Silicium Dec 29

🕹️ Tandy 1000 EX vs Amiga 500
👉 Le Tandy : “Regarde, je fais tourner King’s Quest sans planter 😎”
👉 L’Amiga : “Ok… mais moi j’ai la musique, les couleurs et la démo party 🎶✨”
Deux légendes, deux vibes, même nostalgie (ou presque) ❤️
#RetroComputing #Amiga500 #Tandy1000
#silicium #retrocomputing #geek #heritage