Talk:MOS Technology 6502
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Instruction table layout
[edit]Should the instruction table have the rows 000xxx00 to 111xxx11 (approximately corresponding to instructions) and the columns xxx000xx to xxx111xx (approximately corresponding to addressing modes)? — Preceding unsigned comment added by Qalle2 (talk • contribs) 22:45, 12 February 2022 (UTC)
- Perhaps something like this (updated link). -Qalle2 (talk) 02:03, 13 February 2022 (UTC)
- That's an interesting table but it might only be valuable for hard-core 6502 people. The current table seems fine. Johnuniq (talk) 02:50, 13 February 2022 (UTC)
The Tamagotchi probably did not use a 6502
[edit]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
[edit]"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)