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--- builderpages:floobydust:c02_pocket [2023/01/27 05:21] – Revision from 2023-01-27
+++ builderpages:floobydust:c02_pocket [2026/06/15 12:59] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+/* Imported from Wayback Machine
+   Original URL : https://retrobrewcomputers.org/doku.php?id=builderpages:floobydust:c02_pocket
+   Snapshot date: 2023-01-29
+   Generator    : wayback-archiver
+*/
+**C02 Pocket SBC Information**
+The C02 Pocket SBC was created to provide a good performing 65C02 pocket-sized portable computer. The PCB is based ExpressPCB's MiniBoard Pro format, which is 3.8“ x 2.5” and is a 4-layer board with a top silk screen. The C02 Pocket is small enough to fit it your shirt pocket and can be used with any modern computer that has a USB port, which is used as a console. It does require a dedicated 5-volt DC supply. Note that this can be powered from a USB port as well, but a separate connector would be required.
+**Hardware Configuration:**
+WDC W65C02S processor running at 6MHz
+Alliance 32KB 70ns Static RAM
+Atmel 28C256 32KB 70ns EEPROM
+NXP/Philips SCC2691 UART (limits CPU clock to 6MHz)
+Atmel ATF22V10CQZ PLD for a single glue logic chip
+TI 7705B Reset Supervisor - provides negative and positive Reset signals
+Maxim DS-1813 Reset Supervisor - provides a NMI trigger for a Panic routine
+[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:floobydust:the_c02_pocket-sbc.pdf|the_c02_pocket-sbc.pdf]]
+[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:floobydust:hardware.zip|hardware.zip]]
+[[builderpages:floobydust:c02_pocket|{{builderpages:floobydust:pocket-sbc-pcb-top.jpg?400|pocket-sbc-pcb-top.jpg}}]]
+[[builderpages:floobydust:c02_pocket|{{builderpages:floobydust:pocket-sbc-pbc-bottom.jpg?400|pocket-sbc-pbc-bottom.jpg}}]]
+[[builderpages:floobydust:c02_pocket|{{builderpages:floobydust:sbc-nochips.png?400}}]]
+[[builderpages:floobydust:c02_pocket|{{builderpages:floobydust:pocket-sbc-loaded.jpg?400|pocket-sbc-loaded.jpg}}]]
+**Software Configuration:**
+Currently, there are three separate code components that are loaded into EEPROM:
+- C02 BIOS, which provides a JUMP table for access to the hardware
+- C02 Monitor, which provides a JUMP table for core functions and accesses the C02 BIOS via it's JUMP table
+- Enhanced Basic, which is a CMOS version of Lee Davison's 2.22 version with Klaus Dorman's patches to P5 level
+EhBasic is just under 10KB and is loaded at $B000 in EEPROM
+C02Monitor is less than 6KB and is loaded at $E000 in EEPROM
+C02BIOS is less than 2KB and is loaded at $F800 in EEPROM
+Note that hardware I/O is located at $FE00 and consists of 5- I/O selects, each at 32 bytes wide. 1- I/O select is for the SCC2691 and the other 4- I/O selects are available via the 30-pin I/O Expansion Connector.
+[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:floobydust:c02_software_2.02.zip|c02_software_2.02.zip]]
+[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:floobydust:ehbasic_2.22p5c.zip|ehbasic_2.22p5c.zip]]