Recent Posts

91

NC100, NC200, PCW, PDA600 - the rest of the Family! / Re: New PCW FPGA hardware emulator

« Last post by GUNHED on 18:45, 11 August 20 »

... and the core can run at upto 32Mhz.nd and joystick support.

Does this mean, that the hardware emulator can run 8x faster than a real PcW?

92

Games / Re: Online emulator

« Last post by GUNHED on 18:39, 11 August 20 »

Stumbled over this nice thread, and took a look... all I found was kind of the "opposite", but I'll attach it anyway. Just for a smile. 

93

Games / Re: Lost game found: Alpha Jet (1988)

« Last post by GUNHED on 18:13, 11 August 20 »

I do remember Airballs too, a great game, here a review...



https://www.youtube.com/watch?v=Gniwq3fahZo

94

Amstrad CPC hardware / Re: Universal Serial Interface for Amstrad CPC (a.k.a USIfAC)

« Last post by GUNHED on 18:01, 11 August 20 »

This is just awesome!


Maybe somebody should split the topic now?

95

Technical Support / Re: 6128+ Scart Question

« Last post by Bryce on 17:52, 11 August 20 »

The problem is, it would be a different (and complicated) solution for every TV and even with the best result, there are people who aren't happy with the GX picture on their TV either.

Bryce.

96

Technical Support / Re: 6128+ Scart Question

« Last post by Overkill on 17:30, 11 August 20 »

Well that would of course depend on the findings, people have tried adding capacitors already and didn't you say that you modified your own to overcome this issue?  I wouldn't describe the picture difference as "marginally better", it's a lot better on the GX, and that's just on a 19" TV.  There isn't any careful tuning that I can find apart from lowering the sharpness as low as it will go.

Personally I have a couple of CM14 monitors and a MM12, but I'd still be interested to discover why there is such a difference on a TV.

97

Programming / Re: WinCPCTelera

« Last post by awergh on 16:36, 11 August 20 »

That was quick  .
So I tried that but have a problem, as you can see I got a different result with wincpctelera to with cpctelera.

Code: [Select]

#include <cpctelera.h>

const u8 g_test[546] =
{
    0x58, 0x55, 0x00, 0x5D, 0x11, 0x03, 0x71, 0xFF, 0x0F, 0x80, 0x4F, 0xD0, 0xA2, 0xC0, 0xFF, 0xF2,
    0x04, 0x11, 0x71, 0xA3, 0x59, 0x40, 0xA5, 0xEF, 0xA3, 0x02, 0xFF, 0xFA, 0x2A, 0x40, 0x28, 0xFF,
    0x1F, 0x15, 0x40, 0x04, 0xA2, 0x23, 0xF8, 0xF6, 0x23, 0x6A, 0xB1, 0xEC, 0x88, 0x09, 0x2A, 0xA2,
    0xAC, 0xC7, 0x9B, 0x88, 0xC0, 0x87, 0xCA, 0x01, 0xF0, 0xC7, 0x57, 0xF5, 0x89, 0x57, 0xC0, 0xC0,
    0x00, 0x59, 0x40, 0xC1, 0xCD, 0x5C, 0xFF, 0x5F, 0x80, 0x54, 0xFF, 0x1E, 0x80, 0x11, 0xB8, 0xA3,
    0xAC, 0xC0, 0xBF, 0xDA, 0x51, 0xD0, 0xFD, 0x4E, 0x15, 0x40, 0xE4, 0xFF, 0xAB, 0xC0, 0x2F, 0xAA,
    0x55, 0xFF, 0x7D, 0x54, 0xC0, 0x2B, 0x95, 0xA0, 0xE1, 0xBC, 0xAA, 0x40, 0x28, 0x46, 0x24, 0x74,
    0x55, 0xC0, 0xA8, 0xE5, 0x22, 0x40, 0x48, 0xA8, 0x13, 0xC0, 0x41, 0xD6, 0x19, 0x08, 0x40, 0xC0,
    0x72, 0xB1, 0x29, 0x20, 0xD2, 0x00, 0x3F, 0x82, 0x82, 0x3C, 0xEF, 0xC3, 0xA2, 0xC0, 0xFF, 0xF2,
    0x55, 0x11, 0xC1, 0xC0, 0x55, 0xFF, 0x3E, 0x20, 0x22, 0xBE, 0xAC, 0xEA, 0xFF, 0xA9, 0xA0, 0x20,
    0x2D, 0x07, 0x4E, 0xE8, 0xAA, 0xC0, 0xF2, 0xDA, 0x40, 0x27, 0x5D, 0x55, 0xFF, 0x0F, 0x4C, 0xD4,
    0x55, 0x1F, 0x5D, 0x4B, 0x13, 0xC0, 0x41, 0xCA, 0x9C, 0xAA, 0x12, 0x21, 0x48, 0x18, 0x00, 0x83,
    0x7E, 0xEA, 0xFD, 0x83, 0x28, 0x3C, 0xC0, 0x38, 0xFF, 0x0F, 0x05, 0x00, 0xE4, 0xFF, 0x89, 0x03,
    0xE0, 0xEE, 0xB4, 0x0A, 0xD1, 0xFF, 0x7B, 0x02, 0x80, 0x4F, 0xA9, 0xE2, 0xD6, 0xAC, 0x80, 0x2A,
    0xFF, 0x4F, 0x55, 0xC0, 0xE4, 0xFF, 0x8B, 0x80, 0x2A, 0xA2, 0x48, 0xD4, 0xB0, 0x18, 0x23, 0xD4,
    0xE7, 0xE5, 0x51, 0x40, 0x51, 0x54, 0xA2, 0xC9, 0xFE, 0x0A, 0x40, 0x88, 0xEE, 0x46, 0xED, 0x9C,
    0x55, 0x00, 0x4D, 0xB7, 0x1F, 0x44, 0x3C, 0xC1, 0xFF, 0x7D, 0x51, 0x80, 0xFF, 0x79, 0x82, 0x80,
    0xC8, 0xFF, 0x07, 0x02, 0xC1, 0x95, 0x6B, 0x02, 0x75, 0xFF, 0x3D, 0x15, 0xB4, 0xDF, 0x53, 0x15,
    0xFF, 0x3D, 0x55, 0x35, 0x97, 0x78, 0x5E, 0x04, 0x4D, 0xD8, 0xF7, 0x44, 0x31, 0xF9, 0x57, 0xC0,
    0xD5, 0xC8, 0x2E, 0x82, 0x32, 0x23, 0x95, 0x87, 0x80, 0x4A, 0xCF, 0xD7, 0xA0, 0xFE, 0xFA, 0x2A,
    0x22, 0x00, 0x0E, 0xBE, 0xCE, 0xAD, 0x39, 0xEE, 0xFF, 0x83, 0x40, 0x20, 0xFF, 0x5F, 0x05, 0xDE,
    0x6F, 0x51, 0x14, 0x12, 0x77, 0xC0, 0x55, 0xEE, 0xE4, 0xB1, 0x8F, 0x82, 0xFF, 0x7A, 0xAA, 0x40,
    0x20, 0xFF, 0x1F, 0x50, 0x98, 0x8D, 0x50, 0x80, 0xE4, 0xFF, 0xA1, 0xC0, 0x26, 0xA0, 0x50, 0x40,
    0x90, 0xFF, 0x87, 0x82, 0x80, 0xD9, 0x32, 0x45, 0x17, 0x5D, 0xD5, 0xA0, 0x06, 0x0F, 0x35, 0xFE,
    0x3D, 0x15, 0x11, 0x80, 0x11, 0xAD, 0x03, 0x39, 0xBE, 0xFF, 0x27, 0x82, 0xC0, 0xFF, 0x7C, 0x41,
    0x3B, 0xDC, 0xAE, 0x03, 0x10, 0xF5, 0xE2, 0x09, 0x40, 0x00, 0x50, 0x2A, 0xA8, 0xFF, 0xAF, 0xA2,
    0x80, 0xFF, 0xF2, 0x55, 0x90, 0x8F, 0x57, 0x40, 0x41, 0xFF, 0x3E, 0x80, 0x40, 0x2A, 0x28, 0x41,
    0x99, 0x77, 0x55, 0x40, 0xA3, 0x41, 0x8A, 0xCB, 0xEE, 0xAA, 0x16, 0xAE, 0x49, 0x1A, 0xA8, 0xC4,
    0xBA, 0xEA, 0xFE, 0x00, 0xA7, 0x0A, 0x62, 0x92, 0x11, 0xEE, 0x80, 0x4F, 0xAA, 0x45, 0x40, 0x11,
    0xB5, 0x04, 0xFA, 0x8D, 0xAC, 0x11, 0x62, 0xAA, 0x80, 0x9D, 0x22, 0x40, 0x12, 0x57, 0xC0, 0x75,
    0xD8, 0xA9, 0xA0, 0x40, 0xC2, 0x28, 0x15, 0x40, 0x04, 0x9E, 0xAB, 0x80, 0xA0, 0xA3, 0x49, 0x15,
    0x71, 0x57, 0x35, 0x99, 0x4E, 0x76, 0x14, 0x80, 0x14, 0xB5, 0xAB, 0x77, 0xE0, 0x20, 0x4D, 0xAE,
    0x25, 0x60, 0x08, 0x40, 0xE4, 0x82, 0x21, 0xD0, 0x55, 0xE0, 0x85, 0x45, 0x40, 0x4B, 0xD0, 0x82,
    0x40, 0x16, 0x0A, 0xC0, 0x80, 0x48, 0x91, 0x44, 0x80, 0x0C, 0x95, 0x40, 0xC0, 0x00, 0xC8, 0x8A,
    0xA0, 0x00
};

// End address of video memory.
#define VIDEO_MEMORY_END (void*)(0xFFFF)

void main(void)
{
   u8* memory = cpct_getScreenPtr(CPCT_VMEM_START, 20, 96);
   void* crunchedDataEnd = g_test + 546 - 1;

#ifdef WINCPCTELERA
   void* memoryEnd = WinCpcTelera_GetMemPtr(VIDEO_MEMORY_END);
#endif

   // Disable the firmware to prevent it from interfering with setVideoMode.
   cpct_disableFirmware();

   // Set video mode to mode 0.
   cpct_setVideoMode(0);

   // Decrunch the crunched map into video memory.
#ifdef WINCPCTELERA
   cpct_zx7b_decrunch_s(memoryEnd, crunchedDataEnd);
#else
   cpct_zx7b_decrunch_s(VIDEO_MEMORY_END, crunchedDataEnd);
#endif

   // Loop forever
   while (1)
   {
       
   }
}


98

Hardware related / Re: CPC 464 : suddenly not powering up

« Last post by Bryce on 16:26, 11 August 20 »

Nope, if any RAM was bad the 464 wouldn't boot at all. More likely:


- A short in the tapedeck.
- Bad capacitors.
- Dodgy connection (the power switch is fed via the tapedeck connector).

Bryce.

99

Technical Support / Re: 6128+ Scart Question

« Last post by Bryce on 16:22, 11 August 20 »

I'm sure that someone with the knowledge, tools and time could identify exactly why the GX produces a perfect picture on TVs but the Plus doesn't.  whether it be that IREF circuit, smoother power, slower clock speed or something else.

And then? What would we do with that information? It's unlikely that people will start replacing/adding parts to the video circuitry just to get a marginally better picture which can be attained with some careful tuning of their TV.

Bryce.

100

Hardware related / Re: CPC 464 : suddenly not powering up

« Last post by Liartes on 16:19, 11 August 20 »

Hello again,
On this CPC any action on the tape deck result in a freeze with graphical artifacts. I tested my tape on another CPC 464 and it load just fine.I supposed the freeze on game loading could be related to faulty memory chips, but even rewind a tape result in a freeze. Maybe a shortage somewhere ? I didn't find much or maybe do not use the correct keywords related to tape drive issues. Does anyone experienced this with a CPC 464 ?