Differences

This shows you the differences between two versions of the page.

--- builderpages:plasmo:zrc [2023/03/29 19:26] – Revision from 2023-03-29
+++ builderpages:plasmo:zrc [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:zrc
+   Original URL : https://www.retrobrewcomputers.org/doku.php?id=builderpages:plasmo:zrc
-   Snapshot date: 2023-03-29
+   Snapshot date: 2026-01-24
    Generator    : wayback-archiver
 */
@@ Line 9: / Line 9: @@
 ===== Introduction =====
-ZRC is derived from the [[builderpages:plasmo:zorc:zorc0|ZoRC]] experiment. The basic notion is that large RAM and fast serial upload enable a diskless CP/M SBC. However, just in case that idea didn't work out, ZRC has an optional compact flash interface. The targeted software for ZRC is ROMWBW
+ZRC is derived from the [[builderpages:plasmo:zorc:zorc0|ZoRC]] experiment. The basic notion is that large RAM and fast serial upload enable a diskless CP/M SBC. However, just in case that idea didn't work out, ZRC has an optional compact flash interface. The targeted software for ZRC is ROMWBW.
+[[builderpages:plasmo:zrc:zrc_r2|Rev2 of ZRC]] uses SIMM-30 memory instead of on-board 2megX8 DRAM.
 [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=09ba84&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/zrc/dsc_58730721.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/zrc/dsc_58730721.jpg?600x224|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_zrc_dsc_58730721.jpg}}]]
@@ Line 61: / Line 63: @@
 ===== Design Files =====
-[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrc:zrc_rev1_1_scm.pdf|Schematic]]
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrc:zrc_rev1_1_scm.pdf|Schematic]]
-[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrc:zrc_rev1_1_gerber.zip|Gerber photoplots]]
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrc:zrc_rev1_3_gerber.zip|Gerber photoplots]] ← updated 2/5/24 for rev1.3 pc board
-[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrc:zrc_cpld_serload_14_7mhz_rts.zip|CPLD equation]]
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrc:zrc_pcb_v1_3_14_7mhz_rts_ws2812.zip|CPLD equation]] ← updated 2/5/24 for rev1.3 pc board
-[[builderpages:plasmo:zrc:zrc_rev1_1ec|Engineering changes]] to add hardware handshakes
+CPLD schematic in PDF format
+CPLD [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrc:zrc_rev1_3pcb_cpld_top_scm.pdf|top schematic]]
+CPLD [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrc:zrc_rev1_3pcb_cpld_serial-transmitter_scm.pdf|serial transmit]] schematic
+CPLD [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrc:zrc_rev1_3pcb_cpld_serial-receiver_scm.pdf|serial receive]] schematic
+CPLD [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrc:zrc_rev1_3pcb_cpld_ws2812_scm.pdf|WS2812 driver]] schematic
+CPLD [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrc:zrc_rev1_3pcb_cpld_dram-controller_scm.pdf|DRAM controller]] schematic
+<del>[[builderpages:plasmo:zrc:zrc_rev1_1ec|Engineering changes]] to add hardware handshakes</del>← Engineering changes not required for rev1.3 pc board
+[[builderpages:plasmo:zrc:zrc_cp2102_handshake|Modification to 6-pin CP2102]] USB-serial adapter to accept CTS handshake
 [[builderpages:plasmo:zrc:memory_map|Memory map]]
@@ Line 73: / Line 89: @@
 ==== Software ====
-[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrc:rev1_1pcb_cpldcf.zip|ROMCPLD]], 32-byte bootstrap ROM resides in CPLD
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrc:rev1_1pcb_cpldcf.zip|ROMCPLD]], 64-byte bootstrap ROM resides in CPLD
-[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrc:zrc_zrserloader.zip|Serial loader]], 256-byte program loaded by ROMCPLD into 0xB000. ← load the binary file ZRSerld.bin
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrc:zrc_zrserloader.zip|Serial loader]], 256-byte program loaded by ROMCPLD into 0xB000. ← load the binary file ZRSerld.bin
-[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrc:rev1_1pcb_zrcmon_v07.zip|ZRCMon, rev0.7]],
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrc:rev1_1pcb_zrcmon_v07.zip|ZRCMon, rev0.7]],
-[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrc:rcz80zrc_hex.zip|ROMWBW]] for ZRC. This is ROMWBW binary image converted to Extended Intel Hex file to be loaded into ZRC
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrc:rcz80zrc_hex.zip|ROMWBW]] for ZRC. This is ROMWBW binary image converted to Extended Intel Hex file to be loaded into ZRC
 ===== Manuals =====
@@ Line 87: / Line 103: @@
 [[builderpages:plasmo:zrc:newcfdisk_zrc|Creating new CF disk for ZRC]]
-Quartus Design file of a [[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrc:simpleserialport_altera_quartus.zip|simple serial port.]]
+Quartus Design file of a [[https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:zrc:simpleserialport_altera_quartus.zip|simple serial port.]]
+[[builderpages:plasmo:zrc:zrc_construction|Construction blog]] of a ZRC
 ===== ZRC in action =====
@@ Line 95: / Line 113: @@
 ZRC driving 128×64 OLED display over I2C bus
-[[https://retrobrewcomputers.org/lib/exe/fetch.php?tok=705404&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Fzrc%2Fi2c_on_zrc.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/zrc/i2c_on_zrc.jpg?400x195|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_zrc_i2c_on_zrc.jpg}}]]
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=705404&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/zrc/i2c_on_zrc.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/zrc/i2c_on_zrc.jpg?400x195|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_zrc_i2c_on_zrc.jpg}}]]
+ZRC driving WS2812B RGB LED with 14.7MHz clock as well as 7.37MHz Z80 clock, see [[https://groups.google.com/g/retro-comp/c/L3W7TaDnX5A|Google Forum posts]]. <– need to document it fully.
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=ecef61&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/zrc/zrc_driving_ws2812b.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/zrc/zrc_driving_ws2812b.jpg?400x151|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_zrc_zrc_driving_ws2812b.jpg}}]]
+==== 30-pin SIMM memory tester ====
-ZRC driving WS2812B RGB LED
+[[builderpages:plasmo:zrc:simm30tester|ZRC modified]] to test 30-pin SIMM memory. [[builderpages:plasmo:zrc:zrc_r2|Rev2 of ZRC]] is based on this prototype.
-[[https://retrobrewcomputers.org/lib/exe/fetch.php?tok=ecef61&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fplugins%2Fckgedit%2Ffckeditor%2Fuserfiles%2Fimage%2Fbuilderpages%2Fplasmo%2Fzrc%2Fzrc_driving_ws2812b.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/zrc/zrc_driving_ws2812b.jpg?400x151|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_zrc_zrc_driving_ws2812b.jpg}}]]
+[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=37f7fe&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/zrc/dsc_77870110.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/zrc/dsc_77870110.jpg?300x200|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_zrc_dsc_77870110.jpg}}]]