Search found 145 matches

by marste
Fri Jul 31, 2020 9:43 pm
Forum: Development
Topic: Counting TStates
Replies: 3
Views: 2590

Re: Counting TStates

Recently I started using sjasmplus with the Visual Studio Code + Z80 Assembly Meter extension and I'm really enjoying it, just select the code with the mouse and you have the count of bytes and T-states displayed in the status bar. Very practical! It is still manual calculation (and when you start ...
by marste
Fri Jul 31, 2020 7:32 pm
Forum: Development
Topic: Pretty fast Mandelbrot set generator...
Replies: 8
Views: 4515

Re: Pretty fast Mandelbrot set generator...

I now use 4.12 fixed point math so you can zoom in further. I've seen that you're doing a lot of operations just to manage the 4 bit displacement. Wouldn't it be faster to go 8.16 in case more exponent were needed? (seems to me you would need the same operations to manage the exponent and even havi...
by marste
Wed Jul 29, 2020 11:49 am
Forum: Development
Topic: "Extreme" 1k programs for ZX80 and ZX81: starter kit
Replies: 15
Views: 10217

Re: "Extreme" 1k programs for ZX80 and ZX81: starter kit

dr beep wrote: Thu May 30, 2019 8:44 pm Got my base...
Ciao Johan, might you share the sjasm adapted version of the kit?
(since Visual Code "source debugger" possibility it might be interesting to many)
by marste
Tue Jul 28, 2020 6:46 pm
Forum: Development
Topic: Counting TStates
Replies: 3
Views: 2590

Counting TStates

For the people that develop their own flicker-free routine (e.g. for ZX80, but also custom ones for ZX81) or anyway programs that need very accurate fine grain timing, there is always the need to calculate the cpu cycles of the program pieces, and usually this activity is done by hand (as I did also...
by marste
Tue Jul 28, 2020 6:37 pm
Forum: Sinclair Misc
Topic: Z80 Explorer
Replies: 3
Views: 2930

Re: Z80 Explorer

Very impressive indeed!
by marste
Sun Jul 19, 2020 11:02 pm
Forum: GAMES
Topic: Tractor Beam - Galaga style game
Replies: 10
Views: 5386

Re: Tractor Beam - Galaga style game

A piece of ascii art!!
I would never think it could resemble so much the original...
Really compliments!!
by marste
Thu Apr 16, 2020 12:36 am
Forum: Hardware
Topic: I started on my new ZX-81 replacement board (kit) ZX81+38
Replies: 30
Views: 16385

Re: I started on my new ZX-81 replacement board (kit) ZX81+38

@mahjongg very very nice project, compliments!

regarding jumpers, would it be nice to have one switching from the 4k ZX80 ROM to the 8k ZX81 one (and also slow mode)?
(with the 16kbyte ROM both fit at the same time and is a matter of switching just address bit 13)
by marste
Wed Apr 01, 2020 12:48 am
Forum: Development
Topic: O.T.L.A. (high speed loader) works for me too !
Replies: 5
Views: 8714

Re: O.T.L.A. (high speed loader) works for me too !

diskman interested in turbo tape
:D
by marste
Wed Apr 01, 2020 12:47 am
Forum: Sinclair Misc
Topic: Load programs via PC to TS1000
Replies: 3
Views: 6414

Re: Load programs via PC to TS1000

In order to load programs I was required to preprocess the audio file amplifying it!
I used audacity, but everything might fit
by marste
Sat Feb 22, 2020 11:00 am
Forum: Emulators
Topic: ZEsarUX Beta 8.1
Replies: 2
Views: 5607

Re: ZEsarUX Beta 8.1

Improved Debugging: -added setting to dump .zsf snapshot when a cpu panic is fired -debug CPU window: can now resize height and have more debug lines -cpu transaction log: faster when opening transaction log file -added key 'n' for "run" on debug cpu. Does the same as closing all menus and returnin...