EMMA 02

FRED 1.5

  • Home
  • CDP18S020
    • General Information
    • I/O Map
  • COMIX-35
  • COMX-35
    • General Information
    • F&M
    • Did You Know...?
    • I/O Map
    • Memory
    • Video
    • Sound
    • Keyboard
    • Cassette
    • Expansion Box
    • Disk
    • Printers
    • Thermal
    • PL-80
    • 32K RAM
    • 80 Column
    • F&M EPROM
    • F&M Joy Card
    • Super Board
    • COMX BASIC V1.00
  • COSMAC Elf
    • General Information
    • I/O Map
  • COSMAC Elf 2000
    • General Information
    • I/O Map
    • Memory
    • Video
  • COSMAC Microtutor
    • General Information
    • I/O Map
  • COSMAC Microtutor II
    • General Information
    • I/O Map
  • COSMAC Vip
    • General Information
    • I/O Map
    • Memory
    • Video
    • Sound
    • Keyboard
    • Cassette
    • STK
    • Chip-8 and 8X
    • Test-Word
    • Floating Point BASIC 2.2
  • COSMAC Vip II
    • General Information
    • I/O Map
    • Floating Point BASIC 2.2
  • Cidelsa
    • General Information
    • I/O Map
    • Memory
    • Video
    • Sound
  • Conic
  • Cosmicos
    • General Information
    • I/O Map
  • CyberVision
  • ETI-660
  • FRED 1
    • General Information
    • I/O Map
    • Cassette
    • CARDTRAN Syntax
  • FRED 1.5
    • General Information
    • I/O Map
    • Cassette
    • FPL-2
    • FPL-4
    • FEL-1
  • HEC1802
  • HUG1802
    • General Information
    • I/O Map
    • Memory
    • Video
    • Sound
    • Keyboard
    • Cassette
    • Chip-8 ETI-660
  • Infinite UC1800
    • General Information
    • I/O Map
  • JVIP
  • Macbug
  • Membership Card
    • General Information
    • I/O Map
  • Netronics Elf II
    • General Information
    • I/O Map
    • Keyboard
    • BASIC/Math
  • Oscom Nano
    • General Information
    • I/O Map
    • Memory
    • Video
    • Sound
    • Keyboard
    • Casette
  • Pecom 32 and 64
    • General Information
    • Software
    • I/O Map
    • Memory
    • Video
    • Sound
    • Keyboard
    • Casette
    • Pecom 32 BASIC
    • Pecom 64 BASIC 1.0 & 4.0
  • Pico/Elf V2
    • General Information
    • I/O Map
  • Quest Super Elf
    • General Information
    • I/O Map
  • RCA Game System
  • RCA Microboard
    • General Information
    • I/O Map
  • RCA MS2000
    • General Information
    • I/O Map
  • RCA MCDS
    • General Information
    • I/O Map
  • RCA Studio II
    • General Information
    • I/O Map
    • Memory
    • Video
    • Keyboard
    • ST2
  • RCA Studio III
    • General Information
    • I/O Map
    • Memory
    • Video
    • Keyboard
  • RCA Studio IV
    • General Information
    • I/O Map
    • Memory
    • Video
    • Keyboard
    • ST4 Syntax
  • RCA Video Coin
    • General Information
    • I/O Map
    • Memory
    • GPL-A (2K RAM)
    • GPL-A (2K ROM)
    • GPL-2
    • GPL-3
    • GPL-4
  • SBC1802
  • Studio 2020
  • Telmac 1800
    • General Information
    • I/O Map
    • Memory
    • Video
    • Keyboard
    • Cassette
  • Telmac 2000
    • General Information
    • I/O Map
    • Memory
    • Video
    • Sound
    • Keyboard
    • Cassette
  • Telmac TMC-600
    • General Information
    • Software
    • I/O Map
    • Memory
    • Video
    • Sound
    • Keyboard
    • Cassette
    • Telmac SBASIC v24.3
  • VELF
    • General Information
    • I/O Map
    • BIOS
    • Video
    • Keyboard
  • VIP2K MC
    • General Information
    • I/O Map
    • Memory
    • Video
    • Chip 8
  • VIS1802
  • VT1802
  • Visicom COM-100
    • General Information
    • I/O Map
    • Memory
    • Video
    • Keyboard

 

 

 

 

 

 

 

 

 

 

 

 

General Information

The FRED (Flexible Recreational and Educational Device) concept was used by RCA for multiple prototype computers eventually resulting in the release of computers like the VIP and Studio II. The FRED 1.5 emulated by Emma 02 is based on the information found in this manual as well as games found on different tapes from the The Sarnoff Collection at TCNJ. 

The FRED 1.5 was similar to the FRED 1 with the main difference that a CDP1801 was used instead of the SYSTEM00 prototype CPU.

Technical specifications

CPU: CDP1801
Clock: 1 MHz
Memory: 2 KB RAM
Video: 32x32, 64x16 or 64x32 pixels
Sound: from tapes or by toggling bit 2 in OUT 3
Keyboard: Hex keypad

Screen shot

FRED 1.5 running the Curses Foiled Again game similar to the Swords game on the RCA Video Coin Arcade.

Curses Foiled Again

Links

Other information about the FRED:

  • Herb Johnson's COSMAC FRED2 at Sarnoff Collection - I expect the FRED 2 is very similar to the 1.5 with the main difference that it runs a CDP1802
  • Original photos on the Hagley Digital Archives

Main Features FRED 1.5 Emulator

  • Adjustable speed, boosting the speed of the FRED 1.5 beyond 1 MHz!
  • Tape features (wav file and real cassette support) including a Turbo version
  • Auto detection of the tape format and detection of stop tones
  • Direct FRED 1.5 memory access to load and save software from the PC hard disk via binary files
  • Support for the FRED 1.5 video with zoom and full screen option by pressing F3
  • Video screen dump to a file (BMP, JPEG, PNG or PCX image)
  • RAM extension up to 32KB