0.8.8

Version 0.8.8 Update - 2025-07-07

Changelog:

• Add support for MSM58321, Epson/Seiko RTC-58321/58323 (Boca IO/XT22)
• Set day of week counter for AT, NS and RP
• Remove workaround for 86Box (>= 4.2.1 no longer needed)

ROM images

Supported RTCs	Ports / Addresses	Used by
MM58167, RP5C15	2C0H, 240H, 340H	SixPakPlus, many clone _8167-based I/O boards
MSM-5832, MSM-6242	2C0H, 313H, 213H	Intel Above Board, Quadram, DTK PII-125, clone MSM-6242 boards
DS12x85, MC146818	70H, 240H, 2C0H	RTC 8088, micro_8088/NuXT, AT/CMOS compatibles
DS12x85, MC146818	240H, 2C0H	RTC 8088 or systems where port 70h is unavailable
Tecmar MM58167	2C0H, 37DH, 27DH, 240H, 340H	Tecmar Captain
DS1216, DS1315	F600H-FE00H	SmartWatch "No slot" ROM socket clock
DS1216, DS1315	C000H-FE00H	SmartWatch "No slot" ROM socket clock
MSM58321	02C0H	Boca IO/XT22
MSM58321	02C0H	Boca IO/XT22 (12 hour AM/PM display)

86Box ROM images

Compatible with 86Box's ISA RTC Time synchronization.

Supported RTCs	Ports	Used by
86Box MM58167	2C0H, 240H	86Box SixPakPlus, 5-PAK, EV-170
86Box MM58167	240H	86Box DTK PII-147

0.8.6

Version 0.8.6 Update - 2023-08-18

Changelog:

• Add support for DS1216, DS1315 SmartWatch "no slot" ROM clock.
• Fix Tandy BDA address conflict.

ROM images

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0.8.5

Version 0.8.5 Update - 2023-07-31

Changelog:

• Fix last day of month validation

ROM images

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0.8.4

Version 0.8.4 Update - 2023-05-11

Changelog:

• 58167 build options for direct compatibility with existing software (ASTCLOCK.COM, CLOCK.COM, 86Box emulation). There is no "standard" way to utilize RAM registers for storage of year on the 58167 and is up to the implementation of each clock software. These options now "emulate" other programs as to be interoperable (this is required for 86Box).
• Option to remove AAM imm (not supported by 86Box)
• Fix port conflict with UMC UM82C088 / ALi M1101 chipset

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