High-Res Graphics to a Model 4/4GA/4D

Ian Mavric has developed a High-Res Graphics board for the TRS-80 Model 4/4GA/4D. It is compatible with the microlabs GX 4.2 board and can be ordered for the cost of $179.99 plus shipping.


TRS-IO

TRS-IO gives a 48K TRS-80 Model III online capabilities and provides access to a variety of services. TRS-IO currently features the following capabilities:

• Access to the RetroStore

• FreHD emulation

• Access to files mounted on a SMB share

• Access to remote servers via TCP

Information on the TRS-IO can be found at https://github.com/apuder/TRS-IO

MISE

The MISE (Model I System Expander) is an add-on device for the vintage Radio Shack TRS-80 Model I microcomputer. It connects to the buffered expansion port on the Expansion Interface or directly to the Model I keyboard, and provides these benefits:

Direct-booting solid state hard disks on Compact Flash, with LDOS-5.3.1 preloaded. No boot floppy or ROM modification is required. Each bootable image can hold up to 64MB, and multiple images on CF cards are supported. That’s a whole lot of space for programs mostly written for 16KB RAM. Dual CF cards can be used for additional storage or easy backup.

10/100 Mbps wired Ethernet connection (up to 8 active IP sockets) with included software: FTP and TFTP servers, FTP client, DHCP client, SNTP client, Telnet client, and Telnet server and DNS client demo programs. Globally-unique MAC address (EUI) provided. Easily move files to and from your TRS-80! Drag and drop!

Real-time clock/calendar with battery backup, compatible with the vintage Alpha Products Newclock-80. Battery backup means the date and time will be accurate and automatically set at every system boot.

Crystal-clear SVGA display output for an 800×600 @ 60Hz monitor, no software required. One-of-eight selectable foreground, background, and border colors. Emulation of the vintage high-resolution PCG-80 and 80-Grafix devices. 80-column text display mode available. Using the VGA display is optional; you can still use the original CRT monitor if you prefer, or you can even use both at the same time.

ROM extension including drivers for the hard disks, real-time-clock, and double-density floppy adapter, if you have one. None of these drivers need consume precious high memory.

Joystick port for Atari 2600 compatible joysticks. Works with most vintage Model I games.

256-byte general-purpose Flash EEPROM for persistent storage.

The manual, set-up instructions, software, and far more information (including ordering) can be found at http://bartlettlabs.com/MISE/.

NEWKEY/80

What is it?

Replace your broken or poorly functioning TRS-80 keyboard
More familiar PC keyboard layout
Use your favorite USB or PS/2 keyboard on your TRS-80
Play games using an Atari Joystick!

Features

USB and PS/2 keyboard interfaces (active port based on currently loaded firmware)
Atari 9-pin Joystick port
Compatible with TRS80 Model 3 and Model 4 (Model 4P not currently supported)
Can work simultaneously with existing keyboard, if desired (when using the included deluxe ribbon cable)
Compact size. Mounts inside TRS80 case
Compatible with most standard PC keyboards
Works with wireless 2.4Ghz USB keyboards
Fast and accurate key response
Native TRS-80 key repeat
Handles special keys independently (arrows, space, control, break, shift, @) for excellent compatibility
Works great with games and applications
Supports TRS80 Control key sequences (Shift+Down for control code input)
Easily upgradable firmware to allow for enhancements and bug fixes

For more information, manuals, and ordering, visit http://www.plaidvest.com/newkey80/.

M3SE

The M3SE (Model III System Expander) is an add-on device for the vintage Radio Shack TRS-80 Model III, Model 4, Model 4D, and Model 4P microcomputers. It connects to the buffered expansion port, and provides these benefits:

Solid state hard disks on Compact Flash, with LDOS-5.3.1 and LS-DOS 6.3.1 preloaded. An included boot floppy is required except for the TRS-80 Model 4P, which auto-boots from the hard drives. Each bootable image can hold up to 64MB, and multiple images on CF cards are supported. Dual CF cards can be used for additional storage or easy backup.
10/100 Mbps wired Ethernet connection (up to 8 active IP sockets) with included software: FTP and TFTP servers, FTP client, DHCP client, SNTP client, Telnet client, and Telnet server and DNS client demo programs. Globally-unique MAC address (EUI) provided. Easily move files to and from your TRS-80! Drag and drop!
Real-time clock/calendar with battery backup, compatible with the vintage Alpha Products Newclock-80. Battery backup means the date and time will be accurate and automatically set at every system boot.
Crystal-clear text-only SVGA display output for an 800×600 @ 60Hz monitor. 80-column text display mode available. Using the VGA display is optional; you can still use the original CRT monitor if you prefer.
Joystick port for Atari 2600 compatible joysticks. Works with most vintage joystick-enabled games.
256-byte general-purpose Flash EEPROM for persistent storage.
Works with both “slow” (2MHz) and “fast” (4MHz) CPU clock rates.

The manual, set-up instructions, software, and far more information (including ordering) can be found at http://bartlettlabs.com/M3SE/.


1 Comments

  1. Question: I see this new graphics board has a 32K byte SRAM, the 62256ALP-10. It is stated to be MicroLabs compatible. The uLab board only had 20 KB of SRAM. But the Radio Shack board had 32K of DRAM. So this brings to mind some questions: 1) is only 20 KB of this new board accessible, as on the uLabs board ? 2) if the full 32K is accessible, is this implemented as on the Radio Shack board ?

    To refresh our memories, recall that the Radio Shack board’s 32K RAM was organized as 128 bytes per horizontal rows, with 256 rows in total. Hence 128 bytes/row * 256 rows = 32 KB DRAM. Yes?
    uLabs SRAM was organized as 80 bytes/row * 256 rows = 20 KB SRAM. Yes?
    (or did uLabs create a new board of which I am unawares?)
    Just checking…my memory is a little hazy going 30+ years back!

    jeffrey_josph@yahoo.com

    Reply

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