English Amiga Board - View Single Post - Slow performance with AmigaOS 3.1.4 in WinUAE 4.2.1

Rotareneg · 12 January 2020, 23:31

Checked a bit more and it depends on the clock chip used. A3000 and A4000 used a RP5C01 which includes 104 bits of RAM, while the MSM6242B on the A2000 and A501 was just the clock. Looking at A1200 expansion cards, some used the RP5C01 but others used various RTC chips without RAM.

12 January 2020, 23:31	#15
Rotareneg Registered User Join Date: Sep 2017 Location: Kansas, USA Posts: 328	Checked a bit more and it depends on the clock chip used. A3000 and A4000 used a RP5C01 which includes 104 bits of RAM, while the MSM6242B on the A2000 and A501 was just the clock. Looking at A1200 expansion cards, some used the RP5C01 but others used various RTC chips without RAM.