Search found 30 matches

by rogerjowett
Thu May 02, 2019 5:15 pm
Forum: ZX Spectrum (and Clones)
Topic: zx spectrum next
Replies: 8
Views: 1046

Re: zx spectrum next

sure will as you asked nicely... no1 is the fullscreen animation i did running on sim coupe the sam coupe emulator now 6 years old and so far only one person has used my technique (well i used bmp2scr and about five other programs ) so that Anton Javorcek has managed to do one with a sample too: pit...
by rogerjowett
Sun Apr 14, 2019 4:45 am
Forum: Introduce yourself
Topic: zx spectrum next
Replies: 29
Views: 3744

Re: zx spectrum next

the trouble is with the high colour demo that the sam is showing tv pictures at 50hz and youtube is converting it to 60hz so it wobbles a lot more than it would if you were looking at it on a tv
by rogerjowett
Sun Apr 14, 2019 4:41 am
Forum: Introduce yourself
Topic: zx spectrum next
Replies: 29
Views: 3744

Re: zx spectrum next

http://tarjan.uw.hu/zxclones_en.htm

just look at all these zx spectrum clones they robbed us - sinclair took the brazilian tk95 manufacturers to court and lost!
by rogerjowett
Sun Apr 14, 2019 4:32 am
Forum: Introduce yourself
Topic: zx spectrum next
Replies: 29
Views: 3744

Re: zx spectrum next

the other really annoying thing is that the magazine article doesn't do the next graphics or audio justice - more youtube videos please even simple technical examples - the video of elite running at 14mhz was amazing but what if the DMA could rotate and skewy zx - in other words if it could rotate a...
by rogerjowett
Sun Apr 14, 2019 4:24 am
Forum: Introduce yourself
Topic: zx spectrum next
Replies: 29
Views: 3744

Re: zx spectrum next

and just think the ez80 has a 24bit address bus so that is 16MB of ram and 16MB of video ram so we could finally give the 3dfx voodoo 3500 a run for its money! - dream on!
by rogerjowett
Sun Apr 14, 2019 4:23 am
Forum: Introduce yourself
Topic: zx spectrum next
Replies: 29
Views: 3744

Re: zx spectrum next

9. pccw benchmarks - well that is a bit unfair - what a pity we cant see the scores for the sam coupe! and some important words of warning for you... don't miss xmas! sam disk drives when you press reset damage the disks - sam nmi button needed to be debounced for it to work properly and the saa1099...
by rogerjowett
Sun Apr 14, 2019 4:15 am
Forum: Introduce yourself
Topic: zx spectrum next
Replies: 29
Views: 3744

Re: zx spectrum next

7. gpio any info? 8. π as in raspberry pie co processor you say well bring it on 1ghz 64bit processor with a graphics processing unit does it have a floating point calculator and a physics processor? in fact what can the GPU on the pie do exactly? how does it compare to the latest nvidia and ati vga...
by rogerjowett
Sun Apr 14, 2019 4:08 am
Forum: Introduce yourself
Topic: zx spectrum next
Replies: 29
Views: 3744

Re: zx spectrum next

6.sound? 3x ay8912? well that sounds great but the thing is i can see you need one for zx spectrum 128k compatibility and maybe one for fuller master unit compatibility but we had an saa1099 in sam a 6 channel stereo chip and she couldn't even emulate the SID chip from the commodore 64/128 (by the w...
by rogerjowett
Sun Apr 14, 2019 4:00 am
Forum: Introduce yourself
Topic: zx spectrum next
Replies: 29
Views: 3744

Re: zx spectrum next

oh just out of interest those high colour demos are two 72KB screens technically it is displaying three 24kb screens so that is 24kb more than the next has in video ram terms which is fixed at 48kb i believe - what a pity she doesn't have 96kb as that would mean one out mnemonic to do interlaced vid...
by rogerjowett
Sun Apr 14, 2019 3:54 am
Forum: Introduce yourself
Topic: zx spectrum next
Replies: 29
Views: 3744

Re: zx spectrum next

4. i finally managed to persuade velesoft: https://velesoft.speccy.cz/sam_zx128.htm to get a zx spectrum 48K and one zx spectrum 128K program to use the external 1mb ram interface for the sam coupe the great advantage of doing this is that only external ram and the rom run at the full 6mhz - all the...