Search found 150 matches
- Tue Jan 19, 2021 2:15 am
- Forum: Emulators
- Topic: ZEsarUX beta 5.1
- Replies: 18
- Views: 7802
Re: ZEsarUX beta 5.1
And I have created a simple ZX81 test program to do the outs: https://github.com/chernandezba/zesarux/blob/master/src/extras/media/zx81/tests/zesarux-zxi-ports.p Ciao Cesar, long time have passed but we are doing retrocomputing for a reason, aren't we? :) I was trying to use the feature (and took m...
- Fri Jan 08, 2021 4:07 pm
- Forum: Sinclair Misc
- Topic: Sinclair Scientific calculator
- Replies: 2
- Views: 302
Re: Sinclair Scientific calculator
Red this post by chance but very very interesting link!
Nice story, nice engineering work and nice emulator (with on/off switch as a cherry)!

Thank you for sharing!
- Tue Jan 05, 2021 5:20 pm
- Forum: Development
- Topic: New prototype ZX-deluxe+
- Replies: 19
- Views: 1352
Re: New prototype ZX-deluxe+
This is for sure one of the best looking clone around!
- Thu Dec 10, 2020 12:28 pm
- Forum: Development
- Topic: New prototype ZX-deluxe+
- Replies: 19
- Views: 1352
- Wed Dec 09, 2020 11:43 pm
- Forum: Sinclair Misc
- Topic: Micro and ... super micro! :)
- Replies: 2
- Views: 606
- Fri Jul 31, 2020 9:43 pm
- Forum: Development
- Topic: Counting TStates
- Replies: 3
- Views: 5259
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 ...
- Fri Jul 31, 2020 7:32 pm
- Forum: Development
- Topic: Pretty fast Mandelbrot set generator...
- Replies: 8
- Views: 7790
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...
- Wed Jul 29, 2020 11:49 am
- Forum: Development
- Topic: "Extreme" 1k programs for ZX80 and ZX81: starter kit
- Replies: 15
- Views: 15320
- Tue Jul 28, 2020 6:46 pm
- Forum: Development
- Topic: Counting TStates
- Replies: 3
- Views: 5259
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...
- Tue Jul 28, 2020 6:37 pm
- Forum: Sinclair Misc
- Topic: Z80 Explorer
- Replies: 3
- Views: 5692
Re: Z80 Explorer
Very impressive indeed!