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--- builderpages:plasmo:zrcc:zrcc1:cf_installation [2024/11/10 14:59] – Revision from 2024-11-10
+++ builderpages:plasmo:zrcc:zrcc1:cf_installation [2026/06/15 13:17] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+/* Imported from Wayback Machine
+   Original URL : https://retrobrewcomputers.org/doku.php?id=builderpages:plasmo:zrcc:zrcc1:cf_installation
+   Snapshot date: 2021-09-17
+   Generator    : wayback-archiver
+*/
+====== Installing a New CF Disk for ZRCC ======
+===== Introduction =====
+On ZRCC the CF disk effectively serves as the system EPROM. When a new CF disk is introduced, it has no useful information. This installation procedure programs the CF disk to serve as the system EPROM. Here is the step-by-step description.
+Recall there is a tiny ROM (64bytes) in CPLD that can load from either CF disk or serial port. Since the CF disk is blank, we need to start from the serial port:
+. Enable serial bootstrap (this step is tricky. Refer to section below for additional information for enabling serial bootstrap) and load serial bootstrap loader, which is a 256-byte hex loader.
+. Use the 256-byte hex loader to load ZRCC monitor
+. Use ZRCC monitor to load CF boot loader that has a bootstrap loader for CF disk and the associated installation software
+. Run CF boot loader to save CF bootstrap code into Master Boot Record of the CF disk
+. Run 2nd part of the CF boot loader to save the ZRCC monitor into specific sectors in track 0 of CF disk
+. Enable CF bootstrap and recycle power. The tiny ROM code in ZRCC will now load the CF bootstrap from Master Boot Record, which in turn, load ZRCC Monitor and run.
+. At ZRCC monitor, load CPM22 BIOS/BDOS/CCP into memory and type 'c2' to copy it into certain sectors in track 0 of the CF disk
+. In ZRCC monitor, load XMODEM.HEX and type 'b2' to boot into CPM22 with XMODEM image in memory 0x100
+. type 'save 17 XMODEM.com' to create the first CP/M22 file in the new CF disk
+. Type 'xmodem unarj.com /r/z1' to copy a decompression program to CF disk
+. Type 'xmodem cpm2.arj /r/z1' to copy compressed CP/M22 distribution files to CF disk
+Type 'unarj e cpm2' to decompress CP/M22 distribution files to CF disk
+. With CF bootstrap in place and CP/M22 installed, now I can just turn on power and type 'b2' and I'm in CP/M.
+[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrcc:zrcc1:zrcc_newcf_teraterm_macro.zip|TeraTerm macro]]. The above procedures can be automated with a macro in TeraTerm, a terminal emulator running in Windows environment. To run the macro, unzip the files into c:\teraterm\zrcc file folder and run the macro file 'newCF.ttl' in TeraTerm.
+[[https://youtu.be/eARz73N0KL0|Video]] of installing a new CF disk using TeraTerm macro, newCF.ttl.
+Updated [[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrcc:zrcc1:zrcc_install_all.zip|TeraTerm macro]] that installs CP/M 2.2, CP/M 3, HiTech C, Zork, and Startrek edition of SCMonitor. To run the macro, unzip the files into c:\teraterm\zrcc folder and run the macro file “newCF.ttl” in TeraTerm
+----
+==== Additional instruction for enabling serial bootstrap mode ====
+Enabling the serial bootstrap mode is a somewhat tricky process. After reset button is released, the CF disk needs about half second to initialize itself to be ready. If the ROM software detected a serial character during the wait for CF to be ready, it will switch to the serial bootstrap mode. To enable the serial bootstrap mode:
+Set up the serial port to 115200 N-8-1 and be ready to send a character to ZRCC,
+Press and release the RESET button. As soon as the button is released, press the keyboard once to send a character to ZRCC,
+ZRCC is now in serial bootstrap mode, but there are no visual indication at all,
+Send the [[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrcc:zrcc1:zrccserialloader_rev01.zip|serial loader]] as binary file (In TeraTerm, check the “Binary” box), the console will respond with
+//ZRCC Loader v0.1\\
+Auto start at 0xB400//
+ZRCC is now ready to accept an Intel Hex file and start execution from 0xB400