Commodore 64 Reu Ram Expansion Unit Sid Random Numbers

Commodore 64 1 MB REU RAM EXPANSION UNIT - 1MB 1750/1764 CLONE - GameDude Computers

Commodore 64 1 MB REU RAM EXPANSION UNIT - 1MB 1750/1764 CLONE - GameDude Computers Demonstrating the various ram expansion units (reus) available for the commodore 64 and 128, including how to program them to help in analysis of the output of the sid's noise. Reus continued to be developed and refined for over a decade. the reu contains a logic ic and dram. the ic is is known as a rec (ram expansion controller), and contains the logic required to swap banks of memory on request from code executed by the cpu.

Inside The Commodore RAM Expansion Unit (REU) « Adafruit Industries – Makers, Hackers, Artists ...

Inside The Commodore RAM Expansion Unit (REU) « Adafruit Industries – Makers, Hackers, Artists ... I have wanted a reu for my commodore 64 and 128, but they haven’t been reasonable to get an original. i also has not seen a reproduction option. yes there are a few options, but nothing i was going to get into. i recently came across frntc’s rad expansion unit project. How to build a rad expansion unit: this section summarizes building and setting up the hardware. Welcome to the community for everything and anything relating to the commodore 64!. What makes them only a pseudo ram expansion device is the fact that the ram they provide is not directly accessible by the processor. the best that can be done is that the reu memory is read from and written from as if it were a very fast external device.

Commodore 64 Ram Expansion (REU) 1764 | NIGHTFALL Blog / RetroComputerMania.com

Commodore 64 Ram Expansion (REU) 1764 | NIGHTFALL Blog / RetroComputerMania.com Welcome to the community for everything and anything relating to the commodore 64!. What makes them only a pseudo ram expansion device is the fact that the ram they provide is not directly accessible by the processor. the best that can be done is that the reu memory is read from and written from as if it were a very fast external device. Ram expansion units also known as reu were initially produced and sold by commodore. this rather popular device is well covered on the net currently and also emulated in software and hardware (e.g. by the 1541 ultimate) pretty well. In setting up the configuration i have set the memory as reu, and in the past i have used a 512k, 1mb, and 2mb reus. in novaterm, it shows in the memory buffer those amounts of memory available. The 64's sid chip also has the ability to generate random values and is very easy to use. all you need to do is select the noise waveform for the sid's voice 3 oscillator and set voice 3's frequency to some nonzero value (the higher the frequency, the faster the random numbers are generated). Commodore produced 3 reu (r am e xpansion u nit) models. these cartridge based reus increased the ram available to the c128 and c64 by an additional 128 kbyte, 256 kbyte or 512 kbyte.

Commodore 64 Ram Expansion (REU) 1764 | NIGHTFALL Blog / RetroComputerMania.com

Commodore 64 Ram Expansion (REU) 1764 | NIGHTFALL Blog / RetroComputerMania.com Ram expansion units also known as reu were initially produced and sold by commodore. this rather popular device is well covered on the net currently and also emulated in software and hardware (e.g. by the 1541 ultimate) pretty well. In setting up the configuration i have set the memory as reu, and in the past i have used a 512k, 1mb, and 2mb reus. in novaterm, it shows in the memory buffer those amounts of memory available. The 64's sid chip also has the ability to generate random values and is very easy to use. all you need to do is select the noise waveform for the sid's voice 3 oscillator and set voice 3's frequency to some nonzero value (the higher the frequency, the faster the random numbers are generated). Commodore produced 3 reu (r am e xpansion u nit) models. these cartridge based reus increased the ram available to the c128 and c64 by an additional 128 kbyte, 256 kbyte or 512 kbyte.

Commodore 64 Ram Expansion (REU) 1764 | NIGHTFALL Blog / RetroComputerMania.com

Commodore 64 Ram Expansion (REU) 1764 | NIGHTFALL Blog / RetroComputerMania.com The 64's sid chip also has the ability to generate random values and is very easy to use. all you need to do is select the noise waveform for the sid's voice 3 oscillator and set voice 3's frequency to some nonzero value (the higher the frequency, the faster the random numbers are generated). Commodore produced 3 reu (r am e xpansion u nit) models. these cartridge based reus increased the ram available to the c128 and c64 by an additional 128 kbyte, 256 kbyte or 512 kbyte.

Commodore 64 REU (RAM Expansion Unit) & SID Random Numbers