Search found 642 matches
- Wed May 08, 2024 8:48 pm
- Forum: Sales/Commercial
- Topic: Simple 8-Bit IDE interface and v1.43 of the +3e ROMs
- Replies: 1
- Views: 123
Re: Simple 8-Bit IDE interface and v1.43 of the +3e ROMs
er... surely they should be simple-8-bit ROMs...
- Sat Mar 30, 2024 6:49 pm
- Forum: Hardware
- Topic: Plus 2A/B External Tape Input
- Replies: 3
- Views: 175
Re: Plus 2A/B External Tape Input
if you connect it on the negative side of C200 with no blocking capacitor of its own you're putting your audio output directly across D202 to ground. Whether or not that matters at all depends on what the output circuit is of course.
- Sat Mar 30, 2024 11:28 am
- Forum: Hardware
- Topic: Plus 2A/B External Tape Input
- Replies: 3
- Views: 175
Re: Plus 2A/B External Tape Input
I would add a second capacitor on the negative side of C200 so that it's not (DC) connected to either side.
Either way, it's miles from the gate array, you're injecting a tape signal into the input circuitry that was designed to receive an external tape signal on the +3.
Either way, it's miles from the gate array, you're injecting a tape signal into the input circuitry that was designed to receive an external tape signal on the +3.
Re: STM32 Bot
The STM32 is a 32 bit ARM microprocessor that's on various popular electronics dev boards.
Bleep bloop.
Bleep bloop.
- Sat Mar 09, 2024 11:41 am
- Forum: Emulators
- Topic: Breakpoints in Fuse debugger
- Replies: 2
- Views: 483
Re: Breakpoints in Fuse debugger
Code: Select all
br wr RAM:0:0x00d8
- Tue Mar 05, 2024 11:33 am
- Forum: Sinclair Miscellaneous
- Topic: That thing with the blue and magenta ladders (OUT)
- Replies: 39
- Views: 1481
Re: That thing with the blue and magenta ladders (OUT)
0% chance I would play long enough to get to it in the first place
- Tue Mar 05, 2024 11:15 am
- Forum: Sinclair Miscellaneous
- Topic: That thing with the blue and magenta ladders (OUT)
- Replies: 39
- Views: 1481
- Tue Mar 05, 2024 10:50 am
- Forum: Sinclair Miscellaneous
- Topic: That thing with the blue and magenta ladders (OUT)
- Replies: 39
- Views: 1481
Re: That thing with the blue and magenta ladders (OUT)
I'd Had Some Port, but I don't think that's an entirely accurate record of the conversation.
I've no desire to read it again to find out though
I've no desire to read it again to find out though
- Thu Feb 08, 2024 11:46 am
- Forum: Hardware
- Topic: UK 1400 PSU Recall
- Replies: 12
- Views: 665
- Wed Feb 07, 2024 4:24 pm
- Forum: Hardware
- Topic: UK 1400 PSU Recall
- Replies: 12
- Views: 665
- Tue Jan 30, 2024 8:09 pm
- Forum: Hardware
- Topic: External FDD connector on +2A/B
- Replies: 6
- Views: 351
- Sun Jan 28, 2024 5:27 pm
- Forum: Hardware
- Topic: External FDD connector on +2A/B
- Replies: 6
- Views: 351
Re: External FDD connector on +2A/B
In theory if you have an original +2A you could populate the missing components on the board, hack a hole in the case to access the floppy connector, and patch the PCB to support twin external drives.
However doing all that would in my opinion ruin what is a relatively rare computer.
However doing all that would in my opinion ruin what is a relatively rare computer.
- Sun Jan 21, 2024 4:38 pm
- Forum: Programming
- Topic: Contention pattern for HALT
- Replies: 25
- Views: 1475
- Sat Jan 20, 2024 8:12 pm
- Forum: Hardware
- Topic: DCP Interspec BUS Expansion Adaptor
- Replies: 33
- Views: 1462
Re: DCP Interspec BUS Expansion Adaptor
I want to know what sort of Meccano models you controlled! I was at a Meccano guild meeting this afternoon and it was disappointingly lacking in wonky old computer interfaces :D Many years ago I built a relay driver interface for my BBC micro, which I used to computerise a Meccano gantry crane. I sh...
- Thu Jan 04, 2024 2:24 am
- Forum: Sinclair Miscellaneous
- Topic: The code so bad you won't hire
- Replies: 131
- Views: 4924
Re: The code so bad you won't hire
Well business logic is going to be pretty similar regardless and it depends how abstracted other functionality is. And if you're given the job of converting a big blob of 6502 to Z80 as quickly as possible, with little care for optimization, then doing the bulk of it with a nasty batch conversion p...
- Wed Jan 03, 2024 7:10 pm
- Forum: Programming
- Topic: SkoolKit: ctl file or skool file?
- Replies: 65
- Views: 2221
Re: SkoolKit: ctl file or skool file?
Just open the skool and control files side by side in a split screen editor, and every time you've added your next block of comments to the control file, hit the function key that runs the command to re-generate your skool file and read the beautifully formatted output that appears
- Wed Jan 03, 2024 7:02 pm
- Forum: Sinclair Miscellaneous
- Topic: The code so bad you won't hire
- Replies: 131
- Views: 4924
Re: The code so bad you won't hire
There is more than one story of developers writing a quick "6502 to Z80" converter (or the other way around) to do a port quickly, so it's not entirely out of the question. I don't mean the CPU architecture, but the machines are so completely different that I can't imagine much of the hig...
- Wed Jan 03, 2024 4:41 pm
- Forum: Sinclair Miscellaneous
- Topic: The code so bad you won't hire
- Replies: 131
- Views: 4924
- Wed Jan 03, 2024 3:34 pm
- Forum: Sinclair Miscellaneous
- Topic: The code so bad you won't hire
- Replies: 131
- Views: 4924
Re: The code so bad you won't hire
You don't have to rely on the cloud somebody else's computer to still benefit hugely from version control. I have loads of personal projects in git that just live here on my own machines and I'm the only person acessing, but when I do want to collaborate with someone else it takes all of five minute...
- Wed Jan 03, 2024 3:26 pm
- Forum: Sinclair Miscellaneous
- Topic: The code so bad you won't hire
- Replies: 131
- Views: 4924
Re: The code so bad you won't hire
It's also a weak excuse because nothing stops you using and benefitting from all the features of modern version control, while also backing up your working copy to GPOZFSteveSmith wrote: ↑Wed Jan 03, 2024 3:08 pm The guy is a legend of course, but this seemed a very strange point of view.
*(Giant Pile Of Zip Files)
- Wed Jan 03, 2024 2:34 pm
- Forum: Sinclair Miscellaneous
- Topic: The code so bad you won't hire
- Replies: 131
- Views: 4924
Re: The code so bad you won't hire
is stranger, why not just OR A or CP A unless HL is changed in an interrupt routine (which would be bad). Probably most bad ASM is produced by old compilers which weren't very good at optimising code and such though. You should only have to read (HL) again if the memory is volatile. I should say th...
- Wed Jan 03, 2024 2:06 pm
- Forum: Sinclair Miscellaneous
- Topic: The code so bad you won't hire
- Replies: 131
- Views: 4924
Re: The code so bad you won't hire
Still not come to a firm explanation on why the teletext adapter ROM is riddled with relative conditional jumps to other jumps/calls like these
Code: Select all
LD (HL),A
CP (HL)
JR NZ,init_memory_0
JP init_48k
init_memory_0:
JP init_16k
- Mon Jan 01, 2024 3:26 pm
- Forum: Programming
- Topic: SkoolKit: ctl file or skool file?
- Replies: 65
- Views: 2221
Re: SkoolKit: ctl file or skool file?
I don't really like all those "routines ... called by other routines". Don't they even get out of sync? I haven't checked. They can be nice in the final ASM output, but I don't like them cluttering the control file. It would be nice if they could be disabled....or can they already? They'r...
- Fri Dec 29, 2023 5:51 pm
- Forum: Games/Software
- Topic: Games Exposed
- Replies: 148
- Views: 7474
Re: Games Exposed
I feel I should defend what szelega and I had done as very much a first pass. In some senses we're not much beyond the "identify what is code and what is data" stage. I got carried away making things like the spells table pretty, because that was easy 😄 A lot of it merely describes what th...
- Fri Dec 22, 2023 7:53 pm
- Forum: Games/Software
- Topic: Spectranet Game docs/SDK
- Replies: 4
- Views: 191