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Replacement Components: Difference between revisions
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===Spectrum +3=== | |||
The transistors in the +3 PSU are H1061s. Possible alternatives include the BD243C and TIP41C | |||
==Integrated Circuits== | |||
===RAM=== | |||
MM5920N (national Semiconductors) chips are equivalent to 4116 RAM chips | |||
AM9016EDC (AMD) chips are the same as 4116 chips. | |||
IMS2600P-12 (Inmos) chips work in any upper RAM position (IC15-22) | |||
41256 chips work in place of 4164 upper RAM chips | |||
V53C256P80L chips work in any upper RAM position (IC15-22) | |||
MN41257-12 chips work in any upper RAM position (IC15-22) | |||
===Logic=== | |||
74LSxx series chips can be replaced with 74HCTxx series chips | |||
===CPU=== | |||
Various makes of Z80 processor are used on Spectrums. | |||
Zilog Z80 CPU | |||
NEC D780C | |||
==Suppliers== | |||
Companies who supply suitable components | |||
[http://www.cricklewoodelectronics.com/Cricklewood/home.php Cricklewood Electronics] specialise in hard to find/obsolete components. | |||
[http://www.rapidonline.com/ Rapid Electronics] | |||
[http://uk.farnell.com/ Farnell] Large supplier with a huge product range. | |||
