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A addon from [[Draysoft]] & [[Evesham Micros|Evesham Micro Centre]] that enables you to make doublicates duplicates of tapes and copy software. The device connects to expansion port, and allows to copy data from an external tape deck to the CPC464's built-in tape recorder.
== Pictures ==
<gallery caption="Draysoft Doubler">
Image:draysoft doubler.jpg|Attached on the back of a CPC464
Image:Doubler Publicity.jpg|Publicity (From CPCrulez)
</gallery>
<gallery caption="Scans by Robcfg">
Image:DraysoftDoubler_PCB_Top.jpg|PCB Top
Image:DraysoftDoubler_PCB_Bottom.jpg|PCB Bottom
Image:DraysoftDoubler_Front.jpg|Front Box
Image:DraysoftDoubler_Back.jpg|Back Box
</gallery>
<gallery caption="Doubler Layout, thanks to Jose Leandro">
File:Doubler - interface_delante.jpg|Doubler - Front Box
File:Doubler - interface_detras.jpg|Doubler - Back Box
File:Doubler - cara_componentes.jpg|Doubler - Components
File:Doubler - cara_pistas.jpg|Doubler - Tracks
File:Doubler PCB.png|Doubler - PCB Front
File:Doubler Layout.png|Doubler - Layout
</gallery>
<gallery caption="Software">
Image:DraysoftDoubler_Tape_Doubler.jpg|Doubler Tape
Image:Draysoft 1.png|Doubler in action
Image:DraysoftDoubler_Tape_Speedcop.jpg|SpeedCop TapeImage:Draysoft 2 speedcop.png|Speedcop SpeedCop conversion programImage:NoPicture.gif|Inside of interface
</gallery>
== Technical ==
The hardware simply conists consists of an external cassette input:
Port F0E0h - Draysoft Doubler External Tape Data Input (Bit5) (Read Only)
* '''Port Conflicts:''' Port F0E0h may conflict with various [[Peripherals]] (which often decode only 1-2 address lines being low). Moreover, it conflicts with the internal Port F4XXh (PPI.PortA, which decodes only A11,A9,A8). To the worst, while running the Doubler software, PPI.PortA is set to 00h, so the Draysoft hardware must output a very strong HIGH level to pull-up the PPIs LOW level.
* '''Doubler software''' (Side A) executes an endless loop that forwards changes on Port F0E0h.Bit5 to PPI.PortC.Bit5 (and also to the Screen Border color). The software doesn't attempt to decode block headersdata blocks, it just forwards the data, and thus also works with any kind of non-standard data blocks. Similar results can be gained using a dual hifi tape deck normal Dual HiFi Tape Deck - the advantage of the Draysoft method is that it outputs 'harder' digital transitions, however, it does add some timing inaccuracies, so the copy isn't exactly the same quality as the original.
* '''Speedcop software''' (Side B) is a baudrate conversion tool, allowing to select 1000, 2000, or 3000 bps (it. It's also allowing to remove SAVE"FILE",P protections. Speedcop is using only the internal recorder, ie. this program is not using the external hardware at all).
== Manual ==
== Download ==
* [[Media:Draysoft Doubler and & SpeedCop.zip|The software that came with the moduleDoubler & SpeedCop.zip]] (cdttape) (Tape image CDT for Emulators) (the zip additonally contains the scanned manual as jpgemulators)
== Weblinks ==
* [http://www.cpc-power.com/index.php?page=detail&num=6370 ''Doubler'' from CPC-Power]
* [http://cpcrulez.fr/hardware-interface_debug-draysoft_doubler_speedcop.htm ''Doubler'' from CPCrulez]
