Changes between Version 2 and Version 3 of vtech/cqfd-scientus
- Timestamp:
- Aug 9, 2021, 9:46:36 PM (3 years ago)
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vtech/cqfd-scientus
v2 v3 3 3 CQFD was announced in 1998 and stopped in 2001 (sources: https://www.lsa-conso.fr/cqfd-une-deuxieme-marque-pour-vtech,27091 , https://www.lesechos.fr/2001/02/vtech-france-a-la-recherche-dun-nouveau-souffle-710803 ) 4 4 5 This machine is likely based on the same z80 chipset as many other VTech laptops. Interestingly it has an AM27C040 UVPROM, meaning the machine was produced in relatively small quantities so a custom mask ROM was not appropriate. 5 This machine is likely based on the same z80 chipset as many other VTech laptops? Unless it's a 6803, that is what MAME says for the Genius Junior 4000 which I think is the German version of this. 6 7 Interestingly it has an AM27C040 UVPROM, meaning the machine was produced in relatively small quantities so a custom mask ROM was not appropriate. 6 8 7 9 It uses the same soundchip as the IQ unlimited laptop (https://alexandre.botzung.fr/fr/vtech-i-q-laptop), VTECH part number 27-05992-0-0. It appears to be based on TI MSP50C3x microcontroller (https://www.ti.com/lit/ug/spsu006c/spsu006c.pdf?ts=1617221600403) based on TI markings on the chip, and matching pinout.