tag:blogger.com,1999:blog-7607885452172131382.post7650635083264056915..comments2024-02-04T18:36:13.826-08:00Comments on ZX Prism: Solid progress...SJBhttp://www.blogger.com/profile/01893701778281575461noreply@blogger.comBlogger14125tag:blogger.com,1999:blog-7607885452172131382.post-74252436865904674092017-01-13T16:50:26.862-08:002017-01-13T16:50:26.862-08:00Thanks for your enthusiasm Roger. The honest answe...Thanks for your enthusiasm Roger. The honest answer is that I have no idea when I'll finish, and I'm not planning on building them to sell (but I will work with anyone who's interested in building them to sell). <br /><br />You can try Prism (and other new hardware like ZX Uno and TB Blue/Next) by using the Zesarux emulator - it emulates all of those plus the traditional SpectrumsSJBhttps://www.blogger.com/profile/01893701778281575461noreply@blogger.comtag:blogger.com,1999:blog-7607885452172131382.post-38652683356288532292017-01-13T16:47:07.976-08:002017-01-13T16:47:07.976-08:00That's not really my aim.That's not really my aim.<br /><br />SJBhttps://www.blogger.com/profile/01893701778281575461noreply@blogger.comtag:blogger.com,1999:blog-7607885452172131382.post-51569925552993382782017-01-13T16:46:29.932-08:002017-01-13T16:46:29.932-08:00Not at this stage, no. I'd have to rewrite a l...Not at this stage, no. I'd have to rewrite a lot of the vga interface modelling (also I don't know if there's enough video memory for some of those)SJBhttps://www.blogger.com/profile/01893701778281575461noreply@blogger.comtag:blogger.com,1999:blog-7607885452172131382.post-7593702550465586622017-01-13T00:13:58.007-08:002017-01-13T00:13:58.007-08:00how much will it cost and when can i buy one pleas...how much will it cost and when can i buy one please!rogerjowetthttps://www.blogger.com/profile/16946984246118478078noreply@blogger.comtag:blogger.com,1999:blog-7607885452172131382.post-44172008190127856212017-01-13T00:11:37.678-08:002017-01-13T00:11:37.678-08:00that would make it cpc+ and amiga st compatible sl...that would make it cpc+ and amiga st compatible slightly?!rogerjowetthttps://www.blogger.com/profile/16946984246118478078noreply@blogger.comtag:blogger.com,1999:blog-7607885452172131382.post-84821041429375887202017-01-13T00:11:09.492-08:002017-01-13T00:11:09.492-08:00you couldn't include 320x200 4bits per pixel a...you couldn't include 320x200 4bits per pixel and 640x200 2bits per pixel and 640x400 monochrome please?rogerjowetthttps://www.blogger.com/profile/16946984246118478078noreply@blogger.comtag:blogger.com,1999:blog-7607885452172131382.post-49720318577687870542016-07-20T06:24:30.367-07:002016-07-20T06:24:30.367-07:00There's already quite a bit of technical infor...There's already quite a bit of technical information on this blog - although admittedly a lot of it needs updating as the specification has evolved over the last couple of years. <br /><br />512x384 mode is basically four normal Spectrum screens, one stored in each 8K VRAM block. You can actually switch to this mode, then load a Spectrum game and it plays in the top-left quarter of the screen.<br /><br />I've no idea why you're talking about directx/openGLIDE compatibility - Prism isn't a PC, or a program running on a PC so directX doesn't enter into it at all.<br /><br />Likewise, Prism is basically an FPGA with some memory chips and a few other bits of supporting hardware bolted onto it - its CPU is modelled within the FPGA and it's modelled on a Z80 not an ez80190 as I want it to be able to run (most) Spectrum software :)<br /><br />I'm sure people are still developing hobbyist parallel computers (but they're quite probably not Spectrum compatible!)SJBhttps://www.blogger.com/profile/01893701778281575461noreply@blogger.comtag:blogger.com,1999:blog-7607885452172131382.post-36443884229057935102016-07-20T06:17:37.280-07:002016-07-20T06:17:37.280-07:00No. Prism's an FPGA based computer with the Z8...No. Prism's an FPGA based computer with the Z80 CPU modelled. It can run at 56MHz, but crashes if interrupts are enabled (at least it does at the moment). I have no idea of the ez80190's specification as I've never looked at it. SJBhttps://www.blogger.com/profile/01893701778281575461noreply@blogger.comtag:blogger.com,1999:blog-7607885452172131382.post-26927092115063644842016-07-20T06:15:57.499-07:002016-07-20T06:15:57.499-07:00Video conversion's not on my to-do list, so th...Video conversion's not on my to-do list, so that'd need to be done by someone else.<br />SJBhttps://www.blogger.com/profile/01893701778281575461noreply@blogger.comtag:blogger.com,1999:blog-7607885452172131382.post-29262957935579901942016-07-20T06:14:59.555-07:002016-07-20T06:14:59.555-07:00Cheers, Mr Polo!Cheers, Mr Polo!SJBhttps://www.blogger.com/profile/01893701778281575461noreply@blogger.comtag:blogger.com,1999:blog-7607885452172131382.post-19965585401987448972016-07-20T04:41:06.873-07:002016-07-20T04:41:06.873-07:00oh that was it
how long before we have some PC to...oh that was it <br />how long before we have some PC tools to convert not just screens but entire AVI videos to these new modes please?rogerjowetthttps://www.blogger.com/profile/16946984246118478078noreply@blogger.comtag:blogger.com,1999:blog-7607885452172131382.post-90048368278829592762016-07-20T04:11:01.084-07:002016-07-20T04:11:01.084-07:00could you run an ez80190 at the full 50MHz ? would...could you run an ez80190 at the full 50MHz ? wouldn't it be able to handle 32kb of video ram or more even doesn't it have a 24 bit address bus or did i dream it!rogerjowetthttps://www.blogger.com/profile/16946984246118478078noreply@blogger.comtag:blogger.com,1999:blog-7607885452172131382.post-62880661502169350082016-07-20T03:52:28.581-07:002016-07-20T03:52:28.581-07:00please give more technical information if you can
...please give more technical information if you can<br />more about the video modes and the ram they use please your work looks fantastic<br />512 x 384 has to be directx openGLIDE compatible but will need a lot of processing power - is there any way that you could squeeze a couple of ez80190's in there somehow! no one seems to be developing open architecture parallel computers oh dear i seem to have lost the plot again!<br />well all the best any wayrogerjowetthttps://www.blogger.com/profile/16946984246118478078noreply@blogger.comtag:blogger.com,1999:blog-7607885452172131382.post-49059953100900905502016-07-17T04:02:50.390-07:002016-07-17T04:02:50.390-07:00Very nice, I posted it (well, a link) on my blog, ...Very nice, I posted it (well, a link) on my blog, :)<br /><br />http://www.zxasm.net/index.php/2016/07/17/zx-prism-solid-progress-by-sjb/<br /><br />:DPolominthttps://www.blogger.com/profile/02965216664073695801noreply@blogger.com