User wikokim on the forum.classic-computing.de bought this system in 1978/79. And published the following documents and ROM dumps.
The ESCO 1 was DM 520, the ESCO Monitor DM 460 (German Marks). The backplane was DM 190. He added a 16KB Static Memory Card from KF (?) and modified the Card to work with the ESCO Bus. He also made a LED based Bus Monitor including the KIM-1 based Single Cycle /Single Step Logic.
ESCO stands for Europa Single Board Computer.
The ESCO system was desigend and sold by the firm Neumüller. The firm still exist, though they remember nothing about the ESCO.
The ESCO SBC has:
4 SRAMS TMS4045 makes 2K RAM
several address decoders, including 145 like the KIM-1
A 4MHz crystal, divided to 2 MHz or less MHz.Since the 6502 is the 1 MHz NMOS part, likely 1 MHz
the 6820 is a PIA, the empty slot is for a second PIA
4 IC sockets for2516 EPROMS, here with monitor and an Editor/Assembler
The optional ESCO monitor, consisting of a EuroCard and a separate keyboard PCB, with the usual hex keybaord, 6 seven segment LED displays, audio cassette interface, and a serial 20 mA TTY interface.
Texteditor and Assembler in action. Started Texteditor with “Q” (home made ESCO Monitor extension q $8000). Then “T” to start Texteditor. “TEXT:” entered 2000 (start of texteditor Storage Area). “N Or O” for new or old Text. Entered “O” , “2000 2038 0005” Text Start @2000 to 2038 5 Lines entered . “A T” Starts Assembler 1 Pass to Terminal (SYMS, SYME, Code left default) . “D” Starts pass 2 to terminal.
The R6501Q and R65F11 IC’s I acquired are Rockwell parts for single chip computer systems. Well, they contain a lot more than a 6502, like ROM, RAM, I/O.
This page is about the operation and use of the Rockwell Single-Chip RSC-FORTH system as implemented in the Rockwell R65F11 (40-pin) and R65F12 (64-pin) FORTH-based one-chip Microcomputers and in the Rockwell R65FR1 FORTH Development ROM. Also about the the RSC Forth ROMS as available for the R6501Q IC.
I have two R6501 IC’s. One came with the Glitchworks GW-R65X1QSBC-1 kit, a R6501Q. The other from ebay, a R6501AQ (A for 2MHz).
The Rockwell R6501 is a NMOS-3 microcomputer on a chip. It has an enhanced 6502 CPU, 192 bytes RAM, and a VIA interface (2 16 bit counters, 32 I/O lines a serial port, 10 interrupts.
The 6502 has RMB and SMB BBS and BBR instructions added. I/O in zero page (00-1F, Stack in zeropage (040-FF). See the datasheets for more information.
I am building the Glitchworks GW-R65X1QSBC-1, a SBC around the 6501Q.
The Glitch Works R6501Q/R6511Q Single Board Computer (SBC) is designed to support Rockwell’s single-chip microcomputer processors in QUIP-64 (double zig-zag) packages. These processors contain an enhanced 6502 processor core, 192 bytes of onboard static RAM, hardware serial communications channel, up to 32 bits of parallel I/O, and two counter/timer modules.
The R65X1Q SBC is designed to work with the Rockwell R6501Q, R6511Q, R6501AQ, or R6511AQ. The SBC provides the following features:
32 KB static RAM, compatible with Ferroelectric RAM (FeRAM)
32 KB ROM, EEPROM, or FeRAM in 4K pages, in-board programmable
Serial console via onboard UART
ROM paging and switch-out
Debounced reset and power supply supervisory circuit
Glitchbus expansion header
Glitchbus I/O mapped as a 256 byte memory page at 0xEF00
A full assembly and user’s manual, including schematics, is available as a PDF download. Additionally, full parts kits and assembled units include a customized and enhanced version of Steve Wozniak’s 6502 ROM monitor (link to sources provided below).
A modified version of the Ohio Scientific memory test
Updates to default ROMFS software loads are provided as a hex loadable file which allows in-system updates of the EEPROM, removing the need for an EPROM programmer.
Patches for RSC-Forth
The patches directory on the Glitchworks github site contains patchfiles for changing aspects of the original RCS-Forth ROM images, also for RCS-Forth Configuration 3 (requires extra hardware):
– R65FK2P_R6501Q-SBC.patch Patches for use with Glitch Works R6501Q SBC
– R65FK3P_8_bit_serial.patch Patches to use 8N1 for serial parameters
– R65FK3P_R6501Q-SBC.patch Patches for use with Glitch Works R6501Q SBC and 32K Memory Board
I have recently acquired a R65F11 IC. This IC is part of the RSC (Rockwell Single Computer) Forth system.
Rockwell Single-Chip RSC-FORTH system as implemented in the Rockwell R65F11 (40-pin) and R65F12 (64-pin) FORTH-based one-chip Microcomputers and in the Rockwell R65FR1 FORTH ROM (which I do not ahve, but the ROM dump is available on the RSC Forth page.
