Talk:MOS Technology 6502
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The Tamagotchi probably did not use a 6502
The Wikipedia page states that the Tamagotchi used a 6502 and links to someones blogpost claiming it uses a 6502 with no evidence. Many pages, such as http://tama.loociano.com/, claims the original Tamagotchi uses a CMOS E0C6S46, which is more likely given its specs with, among other things, a controller for a LCD. Bjanders (talk) 17:47, 15 December 2022 (UTC)
- The original Tamagotchi (P1) used E0C6S46, but a later version ("Tama-Go"?) used a 6502-derived GPLB5X processor. [1] [2] Krótki (talk) 09:22, 23 December 2022 (UTC)
74158
"Peddle suggested that anyone that actually required this style of access could implement it with a single 74158." I don't see how that would work with just one, the 74158 is a quad 2-input mux, the bus is 16 bit. The source doesn't say "single" either, just "a". Someone with better knowledge of the topic, please fix Aecho6Ee (talk) 08:04, 12 November 2023 (UTC)
- Yes it looks like you need four of them. More usual would be tristate buffers like the 74367, but the MUX are fine, too. Many of the early chips, and I didn't look up this one, could barely drive one TTL gate. Gah4 (talk) 21:05, 12 November 2023 (UTC)
Reset Pin 40
It seems that the Reset Pin in the pin configuration picture is wrong. It should be inverted. That means a Dash should be drawn over it, similar to the NMI and IRQ pin. WhyLee (talk) 09:19, 30 April 2025 (UTC)
- @WhyLee: Thanks, you are correct. The problem needs to be fixed at commons:File:MOS6502.svg. The diagram appears in the article at MOS Technology 6502#Technical description. I would not be able to look at fixing a diagram for a month. Someone at WP:HELPDESK would be able to recommend how to ask someone to fix it. Johnuniq (talk) 10:07, 30 April 2025 (UTC)
- @WhyLee: Or WP:BEBOLD and update the picture yourself. You'll discover/learn along the way. RastaKins (talk) 20:41, 30 April 2025 (UTC)
Furby
In the Furby article, in the technology section the original model's use of the 6502 is mentioned. Could that be brought into this article? Anamyd (talk) 16:48, 1 May 2025 (UTC)
- It appears that the original Furby did not use a 6502. It used a Sunplus SPC81A. This microcontroller has a huge 80K of ROM and 128 bytes of RAM. Although the architecture of the SPC81A is similar to a 6502, it is missing the Y register. The Furby source code is readily available on the internet. It seems like a beginner wrote it. (RAM is allocated with equates and most of the code is loads, stores, and jumps.) RastaKins (talk) 15:38, 2 May 2025 (UTC)