Shared Projects by LambdaMikel

https://github.com/lambdamikel/Busch-2090

A Modern Voice Synthesizer for the TRS-80 Model 1. https://github.com/lambdamikel/Talker-80

Amstrad CPC Universal Floppy Disk Adapter. Connect the DDI-1 Amstrad disk interface to I1 and I2, or the DDI-3 or DDI-4 using either I1 or I2, and connect up to 3 disk drives using standard unmodified 1-to-1 34 pin PC floppy ribbon cables. There is a DIP switch for setting the READY signal and selecting SIDE1 (for 3.5" floppies), and, most importantly, each drive can set for drive A or B, using any of 4 combinations: A <- SEL0, B <-SEL0, A <-SEL1, B<-SEL1, where SEL0 and SEL1 are the drive 0 and drive 1 SELect lines from the floppy disk controller. Hence, no more cable mods and no ABBA switches required. Moreover, the interal jumpering of the drive (whether it listens to SEL0 or SEL1) doesn’t matter any longer.

LambdaBoard 2 is an extension port expander / backplane for the Amstrad CPC 464. Improves LambdaBoard by providing wider VCC and GND tracks, as well as a key lock gap in the passthrough edge connector.

The LambdaSpeak 3 PCB for the Amstrad / Schneider CPC. Check out the GitHub page as well as the Hackaday.io project page for more info.

LambdaSpeak 3 is a versatile hardware extension for the Amstrad / Schneider CPC home computer, with a focus on speech synthesis and PCM sample playing. It offers:

• An Epson S1V30120 TTS chip running DECtalk v5 for natural sounding speech and even DECtalk singing, as well as a DECtalk-based emulation of the classic Amstrad SSA-1 and DK'tronics speech synthesizers from ~ 1985.
• A fully authentic re-implementation of the classic SSA-1 and DK'tronics speech synthesizers using the original retro GI SPO256-AL2 speech chip.
• A PCM sample playing mode where PCM data is “streamed” from the CPC and turned into PCM audio (the so-called “Amdrum mode”).
• An autonomous High Quality PCM sample playing mode that plays wave files / samples from a SPI EEPROM on board rather than having to stream the PCM data from the CPC.
• A serial interface / UART that is used to control, for example, an MP3 player module.
• A Real Time Clock.