AFTER reading with interest the two recent letters - and your replies - about saving screens, I thought the ability to save screens with their colours, mode and border values in the unused memory was rather handy. My Multiface II can do this, but the loading time is just as normal - awfully slow -so I decided to speed things up. The firmware routine CAS_WRITE was the ideal routine. It allows a headerless file to be stored on tape as a continuous block. CAS_READ can be used to restore the file to its rightful place in memory. I have extended the listing in the August issue to provide four RSXs: |COPYU |COPYD |SAVEPIC |LOADPICThe first two copy the screen down to &4000 and back up to &C000 respectively. |SAVEPIC copies the visible screen (which is at &C000) down to &4000 along with the screen colour, mode and border data. It then saves the screen to tape, but as it is being saved in one chunk rather than 2K blocks there is a useful time saving. |LOADPIC will reverse the process - load the file from tape to &4000, restore the border, inks and mode, and copy the stored screen up to &C000 where it becomes visible. If you have a disc drive, you don't need a |TAPE because the routine selects tape automatically. Even more speed can be gained by increasing the baud rate for the tape deck. With the Micropower Programmer's Toolkit rom / BAUD,3 will set the baud rate to 3000, compared with 2000 for SPEED WRITE 1. I use this program to keep pictures on tape and copy them to disc when required. Ian Purdie, Gateshead. , CPC Computing ★ AMSTRAD CPC ★ DOWNLOAD ★ |
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CPCrulez[Content Management System] v8.7-desktop/c Page créée en 508 millisecondes et consultée 739 foisL'Amstrad CPC est une machine 8 bits à base d'un Z80 à 4MHz. Le premier de la gamme fut le CPC 464 en 1984, équipé d'un lecteur de cassettes intégré il se plaçait en concurrent du Commodore C64 beaucoup plus compliqué à utiliser et plus cher. Ce fut un réel succès et sorti cette même années le CPC 664 équipé d'un lecteur de disquettes trois pouces intégré. Sa vie fut de courte durée puisqu'en 1985 il fut remplacé par le CPC 6128 qui était plus compact, plus soigné et surtout qui avait 128Ko de RAM au lieu de 64Ko. |
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