Recent content by Great Hierophant

I do not like to necropost, but here is a video I made capturing the color MDA in action:

The original feet were made out of what seems to have been rather heavy duty plastic, it feels similar to the top half of the IBM PC/XT keyboard's shell. Would the nylon parts be able to withstand the weight of the keyboard over the long term?

This is no longer accurate, as I was able today to trigger the boot functions on my TX with this adapter, but there are some limitations compared to the original keyboard: The triggering requires much more careful timing, the best way to ensure a function is triggered is to hold down the...

The Scott Baker design does not work with the F1-F4 bootup function keys.

Do these adapters work with the F1-F4 function keys that do things like swap drives and set the system into slow mode when pressed on bootup?

What does the drive do when you power the system? Does the drive activity light turn on, does the disk spin? Do the drive heads move?

https://github.com/86Box/roms - has SL/2 ROM dumps, which should work in the SL.

I would avoid the Apple ColorMonitor IIe and IIc, a.k.a. AppleColor Composite Monitor IIe and IIc, they have a peculiarly ugly way of decoding composite color, which gives every area of solid color a very "stripey" look. Text is very sharp on them, but if you want more solid color you can...

I think the issue is likely in the joystick circuit itself, the schematic for which is on page 72 of the scanned Tandy 1000 SX Technical Reference Manual. The main culprits of failure are U17, the voltage comparator or the components Q1, Q2, CR1 and C118 which do the bulk of comprising the...

As Eduimorphodon said, those RCA jacks are useless without a Feature Board. Using an EGA card would avoid the on-board video, but you have the issue of programs that expect Tandy video in a Tandy 1000, EGA is slower than Tandy video in many programs and some programs only use Tandy sound when...

There may always be a program with an unknown protection and not cracked, so adding the DMA controller eliminates one reason why the program may not work with these machines. Some people would like to run original disks rather than copies if possible.

I cannot seem to find any homebrew memory board upgrades for the Tandy 1000 EX or HX that include the DMA function. DMA is typically required for DRAM refresh, but SRAM does not need periodic refresh and all homebrew upgrades use SRAM. DMA is also typically used for floppy disk drive data...

I would consider testing the 78L05 at VR1 with your multimeter to see if it is outputting 5v. The weakness may not be in the transistor but the power source driving it. Also consider replacing C175 and C176, which are capacitors in the path of the voltage to the amplification circuit.

Pool of Radiance was originally developed for the Commodore 64 and released in 1988 for the Commodore 64 and DOS. Pool of Radiance has theme music in the C64 version which plays on the title screen and was composed by Dave Warhol (Warhol Theme). The Warhol Theme was reused for the game's...

While the most current version of Total DOS Collection may not be publicly available, it is quite likely that there are some older versions Archived on the Internet.