exxos's Atari, Amiga & retro forum

The annoyance when it turns out that one of the parts that arrived today wasn't the correct one:


Spot the empty space....

It is reading USB sticks though 😁

:dualthumbup:
What’s the other part for?

stephen_usher wrote: 19 Jan 2022 23:41 :dualthumbup:
What’s the other part for?

It's a 74HCT74, a flip flop, and half of it seems to form part of the circuit feeding CLK to the AY chip. The other half is doing something else, but the schematics are not totally clear on what that is, though it does also seem to be CLK related.

rubber_jonnie wrote: 20 Jan 2022 09:02

stephen_usher wrote: 19 Jan 2022 23:41 :dualthumbup:
What’s the other part for?

It's a 74HCT74, a flip flop, and half of it seems to form part of the circuit feeding CLK to the AY chip. The other half is doing something else, but the schematics are not totally clear on what that is, though it does also seem to be CLK related.

Hmm, so looking further at the schematic, I clearly couldn't see the wood for the trees, the other half of the 74HCT74 is simply all tied to ground, so not in use.

Note to self: Sometimes stuff is just obvious, so don't over complicate!!

So, umm, do you have a definitive list of your computing collection? Or would that in itself be a huge feat? :D

BennehBoy wrote: 20 Jan 2022 09:49 So, umm, do you have a definitive list of your computing collection? Or would that in itself be a huge feat? :D

Well I have 50 plus machines now, though some are consoles, and 15 odd are STs of one sort or another. Let's see what I can remember!!

Working Machines:

Mattel Aquarius
A Mega STE
2x STE (Both 32Mhz thanks to Exxos)
Multiple STFMs (8 or so)
3x Mega ST
3x BBC model B
Atari 65XE (Ultimate 1MB, VBXE & PokeyMax)
Atari 800XL (Ultimate 1MB, VBXL & PokeyMax)
3x Atari 2600
Atari 7800
Atari Lynx II (BenVenn Screen upgrade and SD card adapter)
CBM64 (Epyx FastLoad and SD2IEC)
QL (Gold Card, QL vDrive and dual FDDs)
Spectrum+
Spectrum +2
ZX81 (ZXExpand+)
Apple ][e (FloppEmu, Mockingboard)
Apple Aluminium Powerbook G4 17"
Mac Classic
Mac Performa 6200
Oric Atmos (Erebus SD adapter)
NES (To be fair it's a clone)
SNES
Gamecube
Wii
Gameboy Advance
Original Nintendo DS
Nintendo DSi
Original Xbox
Xbox360
Gamepark GP32
Gamepark GP2x
Sony PSP
Epson HX-20 (Probably the first laptop)
SGI Octane
Dolch L-PAC486
Amstrad NC100
Amstrad Alt-386

Plus some peripherals like 2x Atari 1050 FDD, 2x Atari 1010 tape drive, Atari XC12 tape drive, CBM 1541 and various other odds and sods.

Not working:

Atari 600XL
2nd SGI Octane

At least that is what I can remember!! I count 54 in total :)

:shock: :shock: :shock:

PS, although I can't really talk, I've got about 150 micro controllers of various kinds, and lots of dev boards.

BennehBoy wrote: 20 Jan 2022 14:06 :shock: :shock: :shock:

PS, although I can't really talk, I've got about 150 micro controllers of various kinds, and lots of dev boards.

Planning on adding an MSX and Dragon 32 soon :)

Watch out! Once you get the MSX bug it can be dangerous... There are *SO* many types of MSX and MSX2 machines out there, especially direct import from Japan.

stephen_usher wrote: 20 Jan 2022 15:11 Watch out! Once you get the MSX bug it can be dangerous... There are *SO* many types of MSX and MSX2 machines out there, especially direct import from Japan.

I know, it's quite terrifying how may MSXs there are!!