Difference: McForth (9 vs. 10)

Revision 102019-01-18 - PeterSchmid

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META TOPICPARENT	name="WebHome"

%DASHBOARD{ section="banner"

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Push the IN button to terminate the program.

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Mass storage

Forth without mass storage (blocks, screens) is a not complete. A SD-Card interface could be a reasonable solution but this is an overkill for a small Forth system.

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Output (SO) pin will remain in a high impedance state until the falling edge of CS is detected again. This will reinitialize the serial communication.

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25LC512 Instruction Set

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25LC512 Instruction Set

Name	Format	Description
READ	0000 0011	Read data from memory array beginning at selected address
WRITE	0000 0010	Write data to memory array beginning at selected address

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RDID	1010 1011	Release from Deep power-down and read electronic signature
DPD	1011 1001	Deep Power-Dow

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AT25M02 Instruction Set

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AT25M02 Instruction Set

Name	Format	Description

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LPWP

0000 1000

Low Power Write Poll

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READ	0000 0011	Read from Memory Array
WRITE	0000 0010	Write to Memory Array

WREN	0000 0110	Set Write Enable Latch (WEL)
WRDI	0000 0100	Reset Write Enable Latch (WEL)
RDSR	0000 0101	Read Status Register (SR)
WRSR	0000 0001	Write Status Register (SR)

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PE	0100 0010	Page Erase – erase one page in memory array
SE	1101 1000	Sector Erase – erase one sector in memory array

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LPWP

0000 1000

Low Power Write Poll

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RDSR 0000 0101 (05h) Read Status Register (SR) Status Register Section 4.2.1 LPWP 0000 1000 (08h) Low Power Write Poll Status Register Section 4.2.2 WREN 0000 0110 (06h) Set Write Enable Latch (WEL) Status Register Section 4.3.1 WRDI 0000 0100 (04h) Reset Write Enable Latch (WEL) Status Register Section 4.3.2 WRSR 0000 0001 (01h) Write Status Register (SR) Status Register Section 4.4 READ 0000 0011 (03h) Read from Memory Array Memory Array Section 5. WRITE 0000 0010 (02h) Write to Memory Array Memory Array Section 6

Serial EEPROM Connected to Centronics Connector (Switches and LEDs)

Sharing the LED and Switch port, you loose two LEDs and one switch. Conflict with the bootstrap loader, some sort of disable EEPROM needed e.g. switch or jumper.

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