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--- builderpages:muellerk:start [2025/11/17 03:05] – Revision from 2025-11-17
+++ builderpages:muellerk:start [2026/06/15 13:03] (current) – external edit 127.0.0.1
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+/* Imported from Wayback Machine
+   Original URL : https://www.retrobrewcomputers.org/doku.php?id=builderpages:muellerk:start
+   Snapshot date: 2026-01-15
+   Generator    : wayback-archiver
+*/
+====== Multicomp Z80 with b/w Graphics ======
+{{[[lib:plugins:ckgedit:fckeditor:userfiles:image:builderpages:muellerk:mymulticompz80-system.jpg]]
+===== Introduction =====
+The graphics expansion consists of two parts, the modified multicomp-z80 VHDL-code and an RSX-package, that holds the needed software to handle the graphic output (dots, lines etc., bitmaps and text). Incl. are also several demo programs which I used to create the shown screenshots.
+Some general parameters:
+ASCII-Display is 80×30 (Col. * Row)
+Graphic-Display is 640x240px Black & White, no Attribute-RAM
+Fully programmable Font-ROM
+ASCII-Cursor ON/OFF via Port access
+RSX-Module (as binary) with basic functions for text, line graphics, bitmaps (only b/w bitmaps, size up to screen size) and Font-ROM access
+Files with C-functions to communicate with the RSX and handle the graphics in user programs.
+Several ready to run binaries (5 demos) and beside that some com's for graphic-screen clearing, graphic-screen ON/OFF and font-exchange (!)
+===== Build Information =====
+Of course, a Multicomp Cyclone-IVb as mentioned above, a programmer for the FPGA-chip, the ready-to-use ALTERA-Quartus2 V13.0.1 software for programming {{[[lib:images:smileys:icon_lol.gif|LOL}}]] All c-/asm-source and binary files are included. For assembling/recompiling you need the M80 Assembler and the MESCC C-Compiler system from Github. Instructions how to do both steps is described in 'xgraph.txt' included in the 'Multcomp-Z80_xgraph-*.tar.gz' package. I haven't checked whether the HiTech C-Compiler can do the job too.
+===== Builder's Notes/Comments =====
+For programming the RSX I used the package from Miguel I. Garcia Lopez as a example/guideline for building my own RSX and C-function files. You can find his original software on [[https://github.com/MiguelVis/RetroProjects|Github]] The Multicomp VHDL-Code incl. the CP/M software I've got from [[builderpages:rhkoolstar:start|here]] in the forum. The PCB and the Mini-FPGA-Board can be found [[boards:sbc:multicomp:cycloneiv-b:start|here]] in the forum wiki. One comment regarding the Mini-FPGA-Board: The Multicomp version using the Cyclone-2 chip can't be used with the graphic, because of not having sufficient internal block-RAM (mainly) and LE's. The green EP4CE&-Board is still offered on [[https://www.ebay.de/itm/272912964704?hash=item3f8ae15c60:g:z-IAAOSwK~da60-o|ebay]].
+The package has reached it's planned basic functionality now. The Reference-Manual, describing the C-functions and the RSX is done.
+===== Builder's Notes/A pre-configured ZPM3 for the SD-Card =====
+The zip-file “zpm3-system18_20210625.img.zip” includes 18 8MB HD-images but in a different selection as mentioned in the above Builder's Notes section. S1 holds a CP/M3 with Z3plus as my rescue system, S2 is my main system with ZPM3. I have done some configuration that reflect my needs, yours may differ. See the alias.cmd in the ROOT: folder. Use MAP SYS: to get a overview. To explore the ALIAS.CMD type LESS ROOT:ALIAS.CMD. Use Ctrl-R and Ctrl-C to page through the file. ESC exits LESS. Images S2..S8 are empty and free for data, S9..S18 are holding the software collection. Use LESS ROOT:VOLINDEX.CAT to see what is included. On S9 the Z3COM-Utilities are collected in two lbr's ZUTILA2O.LBR and ZUTILP2Z.LBR. This is different to the original images18. Use LESS ROOT:Z3COM.CAT to page through file that shows the contents of both lbr's. Both cat files are a copy of the originals on S9 ! If adding new software keep them in sync. I edit the files on S9 and keep a copy in ROOT:. After editing do: COPY ROOT:=B1:*.CAT with S9 mounted to drive B: The programs VPLUS.COM and VMINUS.COM are renamed versions of VEDIT233 configured for my linux key-bindigs ! Delete VMINUS.COM and reconfigure VPLUS.COM to your needs (name, key bindings and terminal). You will find VEDIT233 is on S16 (LESS ROOT:VOLINDEX.CAT). Use it's installer to change the configuration.
+Single key commands like a…z invoke the z-system help system ! To leave the help page type Ctrl-C. I have collected all programs that belong together in lbr's. Most is stored in DEV:. Use LDIR DEV:<lbr-name> to list the contents, LGET DEV:<lbr-name> *.* to load the lbr contents into the WORK: directory (after booting the active drive is WORK: on the RAM-disk).
+One important hint: DON'T use these programs: SETCLK, SHOWRTC,SETRTC or the corresponding rsx IWIRE1.RSX if you do not have installed the I2c hardware-rtc mod. described in the next paragraph. They access the (until then) non existent I2c-controller, the system will hang in a infinite loop waiting for the controller to become ready. The commands RUNSTART & RUNEND use the (until then) non existent internal 1ms time and will not give any results, same for the internal hardware random number.
+Read the System Manual for more that is in the new i2c-rtc-upgrade archive below.
+===== Adding a I2c Hardware-RTC =====
+I've prepared a zip-archive that holds a installation manual for the RTC and 2 new FPGA programming files - one for the older BLUE FPGA-board and one for the GREEN one along with a System-Manual for the Multicomp. If the RTC is installed all 12c-bus related transient commands can be used including the ones for the uptimer and the runtime measurements. Have a look into the system manual for more information.
+Filename
+Filesize
+Last modified
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:muellerk:i2c-rtc-upgrade.zip|i2c-rtc-upgrade.zip]]
+.2 MiB
+/07/10 11:41
+===== New PCB for BLUE/GREEN EP4CE6 FPGA-Board =====
+Here I present (after some time {{[[lib:images:smileys:icon_wink.gif|]] ) a reworked version of the Multicomp-PCB for the GREEN FPGA-Board. The footprint for the Blue-Board ist replaced and fits now to the one of the Green board. Along with that some additional upgrades where incorporated:
+* +5V DC supply for the PS/2-Keyboard\\
+* a voltage supervisor IC (MAX705) for a controlled reset whileg\\
+powering up/down behaviour\\
+* a RESET-button right-hand side of Serial-B\\
+* two +12V-DC input jacks. This enables the use of one 12V wallmount\\
+power-supply for the Multicomp and my 8“ VGA-Monitor\\
+* a i2c-RTC to have a real clock on board\\
+* a ic2-connector to connect extra hardware via i2c-bus
+For the addition of the RTC and the i2c-connector I've dropped Serial-C to free up some space. This will reduce the usability for MPM somewhat, but who really needs 3 serial lines ? {{[[lib:images:smileys:icon_smile.gif|:-)}}]] For a brief impression of the Blue/Green-Multicomp, view the photos in the Gallery below.
+Filename
+Filesize
+Last modified
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:muellerk:multicomp-cycloneiv-apr2021_pcb_blue.zip|multicomp-cycloneiv-apr2021_pcb_blue.zip]]
+.3 MiB
+/04/23 10:44
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:muellerk:multicomp-cycloneiv-apr2021_pcb_green.zip|multicomp-cycloneiv-apr2021_pcb_green.zip]]
+.4 MiB
+/04/23 08:41
+===== Photo Gallery =====
+[[builderpages:muellerk:start|{{builderpages:muellerk:photos1_xdemo1.jpg?120x90|photos1_xdemo1.jpg}}]]
+[[builderpages:muellerk:start|{{builderpages:muellerk:photos2_xdemo2.jpg?120x90|photos2_xdemo2.jpg}}]]
+[[builderpages:muellerk:start|{{builderpages:muellerk:photos3_xdemo3.jpg?120x90|photos3_xdemo3.jpg}}]]
+[[builderpages:muellerk:start|{{builderpages:muellerk:photos4_xdemo4.jpg?120x90|photos4_xdemo4.jpg}}]]
+[[builderpages:muellerk:start|{{builderpages:muellerk:photos5_xdemo5.jpg?120x90|photos5_xdemo5.jpg}}]]
+[[builderpages:muellerk:start|{{builderpages:muellerk:photos7_xdemo7.jpg?120x90|photos7_xdemo7.jpg}}]]
+[[builderpages:muellerk:start|{{builderpages:muellerk:photos8_xdemo8.jpg?120x40|photos8_xdemo8.jpg}}]]
+\\
+[[builderpages:muellerk:start|{{builderpages:muellerk:photos1_multicomp-apr2021_green.jpg?120x102|photos1_multicomp-apr2021_green.jpg}}]]
+[[builderpages:muellerk:start|{{builderpages:muellerk:photos2_multicomp-apr2021_blue.jpg?120x90|photos2_multicomp-apr2021_blue.jpg}}]]
+\\
+===== File List =====
+Filename
+Filesize
+Last modified
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:muellerk:multicomp-z80_xgraph_20190411.tar.gz|multicomp-z80_xgraph_20190411.tar.gz]]
+.7 KiB
+/04/12 05:34
+Filename
+Filesize
+Last modified
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:muellerk:multicomp-z80_vhdl_3xtty_1xvga_20190215.tar.gz|multicomp-z80_vhdl_3xtty_1xvga_20190215.tar.gz]]
+.4 KiB
+/02/16 11:34
+Filename
+Filesize
+Last modified
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:muellerk:multicomp-cb80_xgraph_20181220.tar.gz|multicomp-cb80_xgraph_20181220.tar.gz]]
+.1 KiB
+/03/14 16:14
+Filename
+Filesize
+Last modified
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:muellerk:zpm3-system18_20210625.img.zip|zpm3-system18_20210625.img.zip]]
+.3 MiB
+/06/26 08:21