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Add the rom-bare-clktest to test each console's ADPCM playback rate. #130

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Merged
jbrandwood merged 1 commit into from
Sep 10, 2026
Merged

Add the rom-bare-clktest to test each console's ADPCM playback rate. #130

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3 changes: 3 additions & 0 deletions examples/asm/elmer/README.md
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Expand Up @@ -17,6 +17,9 @@ This directory contains a number of example programs and utilities for developin
* rom-bare-buftest
- A HuCARD ROM to compare a PC Engine emulator's buffered VDC reading with real PC Engine console hardware.

* rom-bare-clktest
- A HuCARD ROM to compare a PC Engine emulator's ADPCM playback rate with real PC Engine console hardware.

* rom-bare-dmatest
- A HuCARD ROM to compare a PC Engine emulator's VDC SATB-DMA and VRAM-DMA timing with real PC Engine console hardware.

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2 changes: 2 additions & 0 deletions examples/asm/elmer/include/bare-startup.asm
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Expand Up @@ -145,6 +145,8 @@ bare_hw_reset: sei ; Disable interrupts.
lda #$F8
tam1

stz IFU_IRQ_MSK ; Disable IFU interrupts.

stz TIMER_CR ; HW reset already does these,
stz IRQ_ACK ; but this may be a reset from
stz IRQ_MSK ; software (i.e. joypad).
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11 changes: 11 additions & 0 deletions examples/asm/elmer/rom-bare-clktest/Makefile
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@@ -0,0 +1,11 @@
all: clktest.pce

include ../Make_ex.inc

AFLAGS ?= --newproc --strip -m -l 2 -S -gA

SRC_INC = pceas.inc pcengine.inc joypad.asm tty.asm vce.asm vdc.asm
SRC_OVL = clktest.asm

clktest.pce: $(SRC_OVL) $(SRC_INC)
$(AS) $(AFLAGS) --raw clktest.asm
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